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CAS No. : | 89793-11-3 | MDL No. : | MFCD00117906 |
Formula : | C7H7ClN2O2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | ZNPORLVPCMFKOR-UHFFFAOYSA-N |
M.W : | 186.60 g/mol | Pubchem ID : | 2736835 |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
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* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
53% | In 1,4-dioxane for 24h; Heating; | |
47% | With sodium hydrogencarbonate In 1,4-dioxane | 97 2-(N-(2-bromo-4-(2-propyl)phenyl)amino)-4-carbomethoxy-6-methylpyrimidine EXAMPLE 97 2-(N-(2-bromo-4-(2-propyl)phenyl)amino)-4-carbomethoxy-6-methylpyrimidine A mixture of 2-chloro-4-carbomethoxy-6-methylpyrimidine (47 g, 252 mmol) and 2-bromo-4-(2-propyl)aniline (54.0 g, 252 mmol) in dioxane (400 mL) was stirred at reflux temperature for 20 h under a nitrogen atmosphere. The reaction mixture was cooled to ambient temperature and concentrated on a rotary evaporator. The residue was treated with a saturated sodium bicarbonate solution and extracted three times with ethyl acetate. The combined organic layers were dried over magnesium sulfate and filtered. Solvent was removed in vacuo to provide a red oil. Column chromatography (ethyl acetate:hexanes::1:1) gave the title product as a crude oil. Recrystallization from ether-hexanes, collection by filtration and drying in vacuo afforded the title compound as a solid (42.8 g, 47% yield): mp 75-76° C.; NMR (CDCl3, 300 MHz): 8.4 (d, 1H, J=8); 7.65 (br s, 1H), 7.4 (d, 1H, J=1), 7.3 (s, 1H), 7.2 (dd, 1H, J=8,1), 4.0 (s, 3H), 2.85 (septet, 1H, J=7), 2.5 (br s, 3H), 1.25 (d, 6H, J=7); Anal.(C16 H18 BrN3 O2): C, 52.76, H, 4.98, N, 11.54, Br, 21.94; Found: C, 52.71, H, 4.99, N, 11.38, Br, 21.83. |
17% | In 1,4-dioxane for 20h; Heating / reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
89% | With potassium carbonate In water; toluene for 12h; Heating; | |
89% | With potassium carbonate In toluene at 100℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 53 percent / dioxane / 24 h / Heating 2: 55 percent / NaH / dimethylformamide / 5 h 3: 3.64 g / lithium borohydride / tetrahydrofuran / 19 h / 0 - 20 °C | ||
Multi-step reaction with 3 steps 1: 1,4-dioxane / 20 h / Heating / reflux 2: sodium hydride / tetrahydrofuran / 24 h / Heating / reflux 3: lithium borohydride / tetrahydrofuran / 15 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 53 percent / dioxane / 24 h / Heating 2: 55 percent / NaH / dimethylformamide / 5 h | ||
Multi-step reaction with 2 steps 1: 1,4-dioxane / 20 h / Heating / reflux 2: sodium hydride / tetrahydrofuran / 24 h / Heating / reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 53 percent / dioxane / 24 h / Heating 2: 55 percent / NaH / dimethylformamide / 5 h 3: aq. NaOH / ethanol / 7 h / Heating | ||
Multi-step reaction with 3 steps 1: 1,4-dioxane / 20 h / Heating / reflux 2: sodium hydride / tetrahydrofuran / 24 h / Heating / reflux 3: sodium hydroxide / ethanol / 18 h / Heating / reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 53 percent / dioxane / 24 h / Heating 2: 55 percent / NaH / dimethylformamide / 5 h 3: NaH / tetrahydrofuran / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 53 percent / dioxane / 24 h / Heating 2: 55 percent / NaH / dimethylformamide / 5 h 3: NaH / tetrahydrofuran |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 53 percent / dioxane / 24 h / Heating 2: 55 percent / NaH / dimethylformamide / 5 h 3: 3.64 g / lithium borohydride / tetrahydrofuran / 19 h / 0 - 20 °C 4: 1.6 g / Et3N / CH2Cl2 / 1.5 h / 0 - 5 °C 5: 59 percent / NaH / tetrahydrofuran / 68 h / 20 °C | ||
Multi-step reaction with 5 steps 1: 1,4-dioxane / 20 h / Heating / reflux 2: sodium hydride / tetrahydrofuran / 24 h / Heating / reflux 3: lithium borohydride / tetrahydrofuran / 15 h 4: triethylamine / dichloromethane / 1.5 h / 0 °C 5: sodium hydride / tetrahydrofuran / 68 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 53 percent / dioxane / 24 h / Heating 2: 55 percent / NaH / dimethylformamide / 5 h 3: 3.64 g / lithium borohydride / tetrahydrofuran / 19 h / 0 - 20 °C 4: 1.6 g / Et3N / CH2Cl2 / 1.5 h / 0 - 5 °C | ||
Multi-step reaction with 4 steps 1: 1,4-dioxane / 20 h / Heating / reflux 2: sodium hydride / tetrahydrofuran / 24 h / Heating / reflux 3: lithium borohydride / tetrahydrofuran / 15 h 4: triethylamine / dichloromethane / 1.5 h / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 53 percent / dioxane / 24 h / Heating 2: 55 percent / NaH / dimethylformamide / 5 h 3: 42 percent / nBuLi / diethyl ether / -78 - 20 °C | ||
Multi-step reaction with 3 steps 1: 1,4-dioxane / 20 h / Heating / reflux 2: sodium hydride / tetrahydrofuran / 24 h / Heating / reflux 3: n-butyllithium / diethyl ether / 23 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 53 percent / dioxane / 24 h / Heating 2: 55 percent / NaH / dimethylformamide / 5 h 3: 39 percent / NaH / tetrahydrofuran / 17 h / Heating 4: 39 percent / borane / tetrahydrofuran / 19 h / Heating | ||
Multi-step reaction with 4 steps 1: 1,4-dioxane / 20 h / Heating / reflux 2: sodium hydride / tetrahydrofuran / 24 h / Heating / reflux 3: sodium hydride / tetrahydrofuran / 26 h / 20 °C 4: borane / tetrahydrofuran / 20 h / Heating / reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 53 percent / dioxane / 24 h / Heating 2: 55 percent / NaH / dimethylformamide / 5 h 3: 39 percent / NaH / tetrahydrofuran / 17 h / Heating | ||
Multi-step reaction with 3 steps 1: 1,4-dioxane / 20 h / Heating / reflux 2: sodium hydride / tetrahydrofuran / 24 h / Heating / reflux 3: sodium hydride / tetrahydrofuran / 26 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 53 percent / dioxane / 24 h / Heating 2: 55 percent / NaH / dimethylformamide / 5 h 3: NaH / tetrahydrofuran / Heating | ||
Multi-step reaction with 3 steps 1: 1,4-dioxane / 20 h / Heating / reflux 2: sodium hydride / tetrahydrofuran / 24 h / Heating / reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
41% | With potassium fluoride In tetrahydrofuran at 20℃; for 8h; Heating / reflux; | 1.A 2-[(2-Biphenyl-4-yl-6-methyl-pyrimidine-4-carbonyl)amino]-3-(4-chlorophenyl)- ' propionic acid; Step A: 2-Biphenyl-4-yl-6-methyl-pyrimidine-4-carboxylic acid methyl ester ;To a mixture of 2-chloro-6-methyl-pyrimidine-4-carboxylic acid methyl ester (560 mg, 3.0 mmol), 4-biphenylboronic acid (653 mg, 3.3 mmol), tris(dibenzylideneacetone)dipalladium(0) (41 mg, 0.045 mmol) and tri-tert- butylphosphine (3 mol%) in THF (15 mL) at 'room temperature was added potassium fluoride (575 mg, 9.9 mmol) and the reaction mixture was heated at reflux temperature for 8 h. After cooling to room temperature, the mixture was filtered through a pad of Celite and the filtrate was concentrated in vacuo. Purification of the crude product by medium pressure liquid chromatography on silica gel (1: 9 ethyl acetate/hexanes) gave 371 mg (41%) of the title compound. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
63% | In dichloromethane at 0 - 20℃; for 16.5h; | 1.A (R)-3 -B enzylsulfanyl-2- [6-methyl-2-(4-phenylpiperidin-1-yl) pyrimidine-4- carbonyl]amino}propionic acid; Step A: 6-Methyl-2- (4-phenylpiperidin-1-yl)pyrimidine-4-carboxylic acidmethyl ester; To a solution of 2-chloro-6-methyl-pyrimidine-4-carboxylic acid methyl ester (186 mg, 1.0 mmol) in dichloromethane (5.0 mL) at 0°C was added 4-phenylpiperidine (161 mg, 1.0 mmol) and the resulting reaction mixture was stirred at 0°C for 30 min. and then at room temperature for 16 h. Saturated sodium bicarbonate (aq. ) was added and the mixture was extracted with dichloromethane. The organic layer was separated, dried over sodium sulfate, filtered and the filtrate was concentrated in vacuo. Purification of the crude product by medium pressure liquid chromatography on silica gel (1: 4 ethyl acetate/hexanes) gave 195 mg (63%) of the title compound |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99% | Stage #1: methyl 2-chloro-6-methylpyrimidine-4-carboxylate With sodium hydroxide In tetrahydrofuran; water monomer for 2h; Stage #2: With hydrogenchloride In tetrahydrofuran; water monomer | 1.4 To a solution of NaOH (960 mg, 24 mmol) in water (70 mL) and THF (5 mL) at r.t. was added ester 1e (3.7 g, 20 mmol). The solution was stirred for 2 h and conc. hydrochloride acid (2.5 mL) was added. The solution was then extracted with ethyl acetate (2×150 mL), dried over Na2SO4, filtered and concentrated to give 3.4 g (99%) of 2-chloro-6-methyl-pyrimidine-4-carboxylic acid as a white solid. |
89% | With water monomer; lithium hydroxide monohydrate In tetrahydrofuran; methanol at 20℃; | 2-chloro-6-methylpyrimidine-4-carboxylic acid (15) To a solution of commercial available methyl 2-chloro-6-methylpyrimidine-4-carboxylate (50 mg, 0.27mmol) in 0.5 m L MeOH, 0.5 mL H2O, and 0.5 mL THF, LiOH (8 mg, 0.3 mmol) was added. The mixture was stirred at RT overnight. Then the mixture was purified by reverse phase column to afford white solid (41 mg, 89%). MS (ESI): m/z 173.0 [M + H]+. |
Stage #1: methyl 2-chloro-6-methylpyrimidine-4-carboxylate With water monomer; sodium hydroxide In acetonitrile at 0℃; for 1h; Stage #2: With hydrogenchloride In water monomer; acetonitrile | a a) To a solution of commercially available methyl-2-chloro-6-methylpyrimidine-4-carboxylate (6.00 g, 32.15 mmol) in acetonitrile (500 mL), 1M aq. solution of NaOH (48.2 mL) is added at 0° C. The mixture is stirred at 0° C. for 1 h then acidified with 25% aq. HCl (7 mL). Volatiles are evaporated and the aq. solution is extracted with ethylacetate, washed with brine, dried over Na2SO4, filtered and concentrated to give 2-chloro-6-methylpyrimidine-4-carboxylic acid (4.22 g) as a yellow crystalline solid; LC-MS: tR=0.42 min, [M+H]+=172.96; 1H NMR (D6-DMSO): δ 2.58 (s, 3H), 7.95 (s, 1H), 14.1 (s br, 1H). |
Stage #1: methyl 2-chloro-6-methylpyrimidine-4-carboxylate With water monomer; sodium hydroxide In acetonitrile at 0℃; for 1h; Stage #2: With hydrogenchloride In water monomer; acetonitrile | a a) To a solution of commercially available methyl-2-chloro-6-methylpyrimidine-4-carboxylate (6.00 g, 32.15 mmol) in acetonitrile (500 mL), 1M aq. solution of NaOH (48.2 mL) is added at 0° C. The mixture is stirred at 0° C. for 1 h then acidified with 25% aq. HCl (7 mL). Volatiles are evaporated and the aq. solution is extracted with ethylacetate, washed with brine, dried over Na2SO4, filtered and concentrated to give 2-chloro-6-methylpyrimidine-4-carboxylic acid (4.22 g) as a yellow crystalline solid; LC-MS: tR=0.42 min, [M+H]+=172.96; 1H NMR (D6-DMSO): δ 2.58 (s, 3H), 7.95 (s, 1H), 14.1 (s br, 1H). | |
Stage #1: methyl 2-chloro-6-methylpyrimidine-4-carboxylate With water monomer; sodium hydroxide In acetonitrile at 0℃; for 1h; Stage #2: With hydrogenchloride In water monomer; acetonitrile | a To a solution of commercially available methyl-2-chloro-6-methylpyrimidine-4- carboxylate (6.00 g, 32.15 mmol) in acetonitrile (500 ml_), 1 M aq. solution of NaOH (48.2 ml.) is added at 00C. The mixture is stirred at 00C for 1 h then acidified with 25% aq. HCI (7 ml_). Volatiles are evaporated and the aq. solution is extracted with ethylacetate, washed with brine, dried over Na2SO4, filtered and concentrated to give 2-chloro-6- methylpyrimidine-4-carboxylic acid (4.22 g) as a yellow crystalline solid; LC-MS: tR = 0.42 min, [M+H]+ = 172.96; 1H NMR (D6-DMSO): δ 2.58 (s, 3 H), 7.95 (s, 1 H), 14.1 (s br, 1 H). | |
Stage #1: methyl 2-chloro-6-methylpyrimidine-4-carboxylate With water monomer; sodium hydroxide at 20℃; for 3h; Stage #2: With hydrogenchloride In water monomer | X.31 A mixture of 2-chloro-6-methyl-pyrimidine-4-carboxylic acid methyl ester (2.Og, 10.7mmol), sodium hydroxide pellets (600mg) and water (60ml) was stirred at room temperature for 3 hours. The reaction was then acidified with 5N hydrochloric acid and left to stand over the weekend. The reaction was cooled on ice and a brown material removed by vacuum filtration. The liquors were extracted with ethyl acetate and the combined organic liquors were concentrated to furnish the acid intermediate as a brown solid (1.59g). 1 H NMR (400 MHz, DMSO-d6): 14.13 (1 H, s), 7.95 (1 H, s), 2.59 (3H, s). The amide was produced according to the method for preparation of 2-chloro-pyrimidine-4-carboxylic acid methylamide. MS: [M+H]+ = 186 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine for 20h; Heating / reflux; | 1 Method 1; Ethyl 6-methyl-2-piperidin-1 -ylpvrimidine-4-carboxylate; Methyl 2-chloro-6-methylpyrimidine-4-carboxylate (1.45 g, 7.77 mmol), piperidine(0.768 ml, 7.77 mmol) and triethylamine (3.25 ml, 13.32 mmol) were combined in anhydrousethanol (30 ml) and the reaction mixture was allowed to stir at reflux for 20 hours. Thereaction mixture was allowed to cool to 25 °C and concentrated under reduced pressure. Theresidue was then diluted with EtOAc and washed with water and brine. The organic layerswere then dried over Na2SC>4, filtered and concentrated. The product was purified by flashchromatography using EtOAc and hexanes; m/z 250. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
76% | With methanol; sodium tetrahydroborate; water at 0 - 20℃; for 16h; | X.1 Intermediate X: Preparation of (2-chloro-6-methylpyrirnidin-4-yl)methylmethanesulfonate; Step 1: Preparation of (2-chloro-6-methylpyrimidin-4-yl)methanol; To a 0 °C solution of methyl 2-chloro-6-methylpyrimidine-4-carboxylate (750 mg, 4.02 mmol) in MeOH (4.5 mL)/water (0.4 mL) was added sodium borohydride (190 mg, 5.02 mmol) portionwise. The reaction was allowed to slowly come to room temperature and then stirred an additional 16 h. The resulting solution was concentrated, re-dissolved in EtOAc, transferred into a separatory funnel and extracted with water. The combined organic layers were washed with brine. The organic layer was dried (MgSO4), filtered and concentrated to afford 484 mg of the crude 4-(hydroxymethyl)-2-chloro-6-methylpyrimidine as a brown solid (yield 76%). LCMS: 159 [M+H]+, RT 1.02 min. |
1.4 g | With sodium tetrahydroborate In ethanol for 0.75h; Cooling with ice; | A.3 Intermediate 1: (2-Chloro-6-methylpyrimidin-4-yl)methanol Methyl 2-chloro-6-methylpyrimidine-4-carboxylate (4.0 g) was dissolved in ethanol (46 ml) and cooled with ice, and sodium borohydride (8.0 g) was added in portions. After 30 min, the ice bath was removed and the reaction mixture was stirred for a further 15 min. The reaction mixture was admixed with ice and water, concentrated, extracted with EtOAc, dried over MgSO4 and concentrated at 40° C. The crude product was purified by means of HPLC. Yield: 1.4 g of (2-chloro-6-methylpyrimidin-4-yl)methanol. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium In methanol; dichloromethane; water | 4 Methyl 2-methoxy-6-methylpyrimidine-4-carboxylate EXAMPLE 4 Methyl 2-methoxy-6-methylpyrimidine-4-carboxylate 30.0 g of methyl 2-chloro-6-methylpyrimidine-4-carboxylate are added to a solution of 4.2 g of sodium in 100 ml of methanol. The mixture is heated under reflux for 2 h and concentrated under reduced pressure, and the residue is taken upon in dichloromethane/water. The organic phase is separated off and the aqueous solution is extracted a further five times using dichloromethane. The combined organic extracts are dried over sodium sulfate and the solvent is distilled off under reduced pressure. 25.5 g of methyl 2-methoxy-6-methylpyrimidine-4-carboxylate of melting point 101°-103° C. are obtained in this way. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
38% | In ethanol for 16h; Heating / reflux; | L.1 Step 1. Preparation of2-carbamimidoylsu1fanyl-6-methylpyrimidine-4-carboxyHc acid methyl ester hydrobromide A mixture of 2-chloro-6-methylpyrimidine-4-carboxylic acid methyl ester (0.50 g, 2.7 mmol) and thiourea (0.41 g, 5.4 mmol) in ethanol (8 mL) was heated to reflux for 16 h and then concentrated in vacuo. Attempt to purify the product by recrystalization (methanol/ether) gave 0.229 g (38%) of an oil which was confirmed as the desired product. |
38% | In ethanol for 16h; Heating / reflux; | L.1 A mixture of 2-chloro-6-methylpyrimidine-4-carboxylic acid methyl ester (0.50 g, 2.7 mmol) and thiourea (0.41 g, 5.4 mmol) in ethanol (8 ml.) was heated to reflux for 16 h and then concentrated in vacuo. The product was purified by recrystalization (methanol/ether) gave 0.229 g (38%) of an oil which was confirmed as the desired product. LC-MS m/z 226.9 (M+H+); RT 1.07 min. |
38% | In ethanol for 16h; Heating / reflux; | 1L.1 Step 1. Preparation of2-carbamimidoylsu1fanyl-6-methylpyrimidine-4-carboxyHc acid methyl ester hydrobromide A mixture of 2-chloro-6-methylpyrimidine-4-carboxylic acid methyl ester (0.50 g, 2.7 mmol) and thiourea (0.41 g, 5.4 mmol) in ethanol (8 mL) was heated to reflux for 16 h and then concentrated in vacuo. Attempt to purify the product by recrystalization (methanol/ether) gave 0.229 g (38%) of an oil which was confirmed as the desired product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | With selenium(IV) oxide In 1,4-dioxane at 105℃; for 12h; | 295.A Under an argon atmosphere a mixture of commercially available 2-chloro-6-methyl- pyrimidine-4-carboxylic acid methyl ester (9.38 g) and selenium dioxide (8.93 g) in 1,4-dioxane (50 mL) was stirred at 1050C for 12 h. The mixture was filtered twice through celite, the filter cake was rinsed with 1,4-dioxane (2 x 100 mL) and the combined filtrates were concentrated to afford the title compound as viscous orange oil (8.0 g, 74%). [MH]+ = 217. |
With selenium(IV) oxide In 1,4-dioxane at 105℃; for 12h; | 24 Intermediate 24: 2-chloro-pyrimidine-4,6-dicarboxylic acid monomethyl ester; To a stirred solution of methyl 2-chloro-6-methylpyrimidine-4-carboxylate (3.73 g, 20 mmol.) in dioxane (20 ml_) is added selenium dioxide (3.55 g, 32 mmol) and the mixture is heated at 10 50C for 12 hours. The suspension is filtered through Celite and washed well with dioxane. The solvent is removed under reduced pressure to give 2-chloro-pyrimidine-4,6- dicarboxylic acid monomethyl ester; HPLC Retention time 0.65 minutes (condition C); MS 217.2 (M+1 ). | |
With selenium(IV) oxide In 1,4-dioxane | 2-chloro-pyrimidine-4,6-dicarboxylic acid monomethyl ester 2-chloro-pyrimidine-4,6-dicarboxylic acid monomethyl ester To a stirred solution of methyl 2-chloro-6-methylpyrimidine-4-carboxylate (3.73 g, 20 mmol.) in dioxane (20 mL) is added selenium dioxide (3.55 g, 32 mmol) and the mixture is heated at 105° C. for 12 hours. The suspension is filtered through Celite and washed well with dioxane. The solvent is removed under reduced pressure to give 2-chloro-pyrimidine-4,6-dicarboxylic acid monomethyl ester; HPLC Retention time 0.65 minutes (condition A); MS 217.2 (M+1). |
With selenium(IV) oxide In 1,4-dioxane at 105℃; for 12h; | 2-chloro-pyrimidine-4,6-dicarboxylic acid monomethyl ester To a stirred solution of methyl 2-chloro-6-methylpyrimidine-4-carboxylate (3.73 g, 20 mmol.) in dioxane (20 mL) is added selenium dioxide (3.55 g, 32 mmol) and the mixture is heated at 10 5°C for 12 hours. The suspension is filtered through Celite and washed well with dioxane. The solvent is removed under reduced pressure to give 2-chloro-pyrimidine-4,6-dicarboxylic acid monomethyl ester; HPLC Retention time 0.65 minutes (condition A); MS 217.2 (M+1). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
at 20℃; for 3h; | 11.1 A mixture of 1 g of methyl 2-chloro-6-methylpyrimidine-4-carboxylate, 20 mL of methanol and 2 mL of 30% sodium methoxide in methanol was stirred under nitrogen at room temperature for 3 hrs, quenched with 3 mL of acetic acid and concentrated under reduced pressure. The residue was partitioned between 25 mL of saturated sodium bicarbonate and 3 x 20 mL of ethyl acetate and the extracts dried over MgSO4. Concentration under reduced pressure gave a white crystalline solid: MS (m+1) = 183.1; 1H NMR (400 MHz, CDC13) 7.5 (s, IH), 4.1 (s, 3H), 4.0 (s, 3H), 2.58 (s, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
44% | With potassium fluoride In tetrahydrofuran; hexane for 8h; Heating / reflux; | 1 Preparation of methyl 6-methyl-2-phenylpyrimidine-4-carboxylate:; To a mixture of methyl 2-chloro-6-methylpyrimidine-4-carboxylate (1.87 g, 10 mmol), phenylboronic acid (1.34 g, 1 1 mmol), Pd2(dba)3 (0.14 g, 0.15 mmol) and tri-tert-butylphosphine (4 mL, 18 mmol, 10%wt in hexane) in THF (50 mL) at room temperature was added KF (1.9 g, 3.3 mmol) and the reaction mixture was heated at reflux temperature for 8 h. TLC monitored (petroleum etheϖethyl acetate = 5: 1). After cooling to room temperature, the mixture was filtered through a pad of celite and the filtrate was concentrated in vacuo. Purification of the crude product by medium pressure liquid chromatography on silica gel (with eluent of petroleum etheϖethyl acetate =20: 1 to 10: 1 ) gave methyl 6-methyl-2-phenylpyrimidine-4-carboxylate as a white solid (1.0 g, 44%). |
With potassium phosphate; tetrakis(triphenylphosphine) palladium(0) In 1,4-dioxane at 100℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: methanol; methyl 2-chloro-6-methylpyrimidine-4-carboxylate With water; sodium hydroxide at 20℃; for 24h; Stage #2: With hydrogenchloride In water at 0℃; | 2-Methoxy-6-methyl-pyrimidine-4-carboxylic acid A suspension of methyl-2-chloro-6-methylpyrimidine-4-carboxylate (5.0 g) in 2N aq. NaOH (67 mL) and methanol (67 mL) is stirred at rt for 24 h. Methanol is evaporated and the aq. phase is acidified with 25% aq. HCl at 0° C. A beige crystalline solid crushes out. It is filtered, rinsed with water and heptane and dried (3.0 g); LC-MS: tR=0.55 min, [M+H]+=169.01; 1H NMR (D6-DMSO): δ 2.50 (s, 3H), 3.94 (s, 3H), 7.52 (s, 1H), 13.7 (s br, 1H). | |
Stage #1: methanol; methyl 2-chloro-6-methylpyrimidine-4-carboxylate With water; sodium hydroxide at 20℃; for 24h; Stage #2: With hydrogenchloride In water at 0℃; | 2-Methoxy-6-methyl-pyrimidine-4-carboxylic acid A suspension of methyl-2-chloro-6-methylpyrimidine-4-carboxylate (5.0 g) in 2N aq. NaOH (67 mL) and MeOH (67 mL) is stirred at rt for 24 h. MeOH is evaporated and the aq. phase is acidified with 25% aq. HCl at 0° C. A beige crystalline solid crushes out. It is filtered, rinsed with water and heptane and dried to give the title compound (3.0 g); LC-MS: tR=0.55 min, [M+H]+=169.01; 1H NMR (D6-DMSO): δ 2.50 (s, 3H), 3.94 (s, 3H), 7.52 (s, 1H), 13.7 (s br, 1H). | |
Stage #1: methanol; methyl 2-chloro-6-methylpyrimidine-4-carboxylate With water; sodium hydroxide at 20℃; for 24h; Stage #2: With hydrogenchloride In water at 0℃; | A suspension of methyl-2-chloro-6-methylpyrimidine-4-carboxylate (5.0 g) in 2N aq. NaOH (67 mL) and MeOH (67 mL) is stirred at rt for 24 h. MeOH is evaporated and the aq. phase is acidified with 25% aq. HCI at 00C. A beige crystalline solid crushes out. It is filtered, rinsed with water and heptane and dried to give the title compound (3.0 g); LC-MS: tR = 0.55 min, [M+H]+ = 169.01 ; 1H NMR (D6-DMSO): δ 2.50 (s, 3 H), 3.94 (s, 3 H), 7.52 (s, 1 H), 13.7 (s br, 1 H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 80℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
44% | Stage #1: 4-methoxyl-3-nitrophenylboronic acid; methyl 2-chloro-6-methylpyrimidine-4-carboxylate With bis-triphenylphosphine-palladium(II) chloride; sodium carbonate In 1,4-dioxane; water for 4h; Reflux; Stage #2: With hydrogenchloride In water | Sat. aq. Na2C03 soln (52.5 mL) was added to a soln of methyl 2-chloro-6- methylpyrimidine-4-carboxylate (107; 5.0 g, 26.8 mmol), 4-methoxy-3- nitrophenylboronic acid (108; 6.86 g, 34.8 mmol) and PdCI2(PPh3)2 (0.94 g, 1 .3 mmol) in dioxane (175 mL). The mixture was heated to reflux for 4 h and partially concentrated, followed by an aqueous workup (EtOAc, 1 M aq. HCI soln; sat. aq. NaCI soln; Na2SC>4). The crude product was suspended in CH2CI2/MeOH 2:1 ; the solid was filtered, washed (MeOH) and dried i.v to afford 109 HCI (3.7 g, 42%). The filtrate was concentrated and purified by FC (CH2CI2/MeOH 100:0 to 70:30) to give 109 HCI (3.87g, 44%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
84% | With triethylamine In N,N-dimethyl-formamide at 60℃; for 16h; | 57.D Step D: To a solution of (3aR, 5r, 6aS) -5- (5-fluoro-2- ( trifluoromethyl ) henyl) octahydrocyclopenta [c] yrrole hydrochloride (1.0 g, 3.23 mmol) and EtjN (1.43 mL, 10.29 mmolS in DMF (50 mL) was added a methyl 2-chloropyrimidine-4-carboxylate (0.641 g, 3.43 mmol) and the resulting solution was stirred at 60 °C for 16 hours. The reaction was diluted with IfcO (200 mL) and extracted with EtOAc (3 x 100 mL) . The combined organic extracts were washed with 0 (3 χ 100 mL) , brine (100 mL) , dried over Na2S0i , filtered, and concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 30% EtOAc in hexanes ) to give methyl 2- ( (3aR, 5r, 6aS) - 5- (5-fluoro-2- ( trifluoromethyl )phenyl ) hexahydro-cyclopenta [c] yrrol- 2 ( IH) -yl ) -6~methylpyriinidine-4-carboxylate as an off-white solid (1.14 g, 84%): MS (ESI+) m/z 424 [M + H] *. |
With triethylamine In N,N-dimethyl-formamide at 60℃; for 16h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With triethylamine In N,N-dimethyl-formamide at 60℃; for 16h; | 43; 44.A General procedure: General Procedure (GP-K1) for 2-aminopyrimidine formation: A mixture of amine I (1 equiv) , desired methyl 2-chloropyrimidine-4-carboxylate (1 equiv), and triethylamine (EtsN) (3 equiv) in DHF (0.25 M) was stirred at 60 °C until the reaction was complete by TLC or LOMS . The mixture was diluted with H2O and extracted with EtOAc. The combined organic extracts were washed with 0, brine, dried over Na2S0 , filtered, and concentrated under reduced pressure. The resulting residue was purified by either normal phase silica gel column chromatography (typical eluents included either a mixture of or hexanes and EtOAc or a mixture of CH2CI2 and a 90:9:1 mixture of CCl2/CH30H/concentrated NH4OH) or C-18 reversed phase column chromatography (typical eluents included CCN and H20) to afford the desired carboxamide XV. The product structure was verified by NMR and by mass analysis. Example 43 s Mthyl 6-methyl-2- ( (3aR, 5r, 6aS) -5- (2- (trifluoromethyl) phenyl)hexahydroeyelopen a [oJpyrrol-2 (1H) -yl)pyrimidine-4- (58) The above compound was prepared according to General Procedure GP-K1 Step A: To a solution of (3aR, 5J?, 6aS) -5- (2- tri fluoromethyl ) henyl ) octahydrocyclopenta [c] pyrrole hydrochloride (9, 1.0 g, 3.43 rrtmol) and EtiN (1.43 itiL, 10.29 tnmol) in DMF (50 raL) was added a methyl 2-chloro6-methylpyrimidine-4-carboxyla,te (0.641 g, 3.43 mmol) and the resulting solution was stirred at 60 °C for 16 hours . The reaction was diluted with 0 (200 mL) and extracted with EtOAc (3 x 100 mL) . The combined organic extracts were washed with 0 (3 x 100 mL) , brine (100 mL) , dried over Na2S04 , filtered, and concentrated under reduced pressure. The resulting residue was chromatographed over silica gel ( 0% to 30% EtOAc in hexanes) to give methyl 6-methyl-2- ( ( 3ai?, SR, 6aS) -5- (2- ( trifluoromethyl ) henyl) hexahydrocyclopenta [c]pyrrol-2 ( IH) -yl ) pyrimidine-4-carboxylate as an off-white solid (1.20 g, 86%): FontWeight="Bold" FontSize="10" H NMR (300 MHz, CDC13) δ 7.61 (m, IH) , 7.58 (m, 2H) , 7.23 (m, IH) , 7.05 (a, IH) , 3.95 (s, 3H) , 3.82 (m, 4H) , 3.59 (m, IH) , 2.92 (m, 2H) , 2.44 (s, 3H) , 2.40 (m, 2H) , 1.69 (m, 2H) ; MS (ESI+) m/z 406 [M + H] '. |
With triethylamine In N,N-dimethyl-formamide at 60℃; for 16h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With triethylamine In N,N-dimethyl-formamide at 60℃; for 16h; | 44.A Step A: To a solution of (3ai?, 5R, 6aS) -5- (2- (trifluoromethyl ) henyl ) octahydrocyclopent [c]pyrrole hydrochloride (1, 1.0 g, 3.43 mmol) and EtjN (1.43 mL, 10.29 mmol) in DMF (50 mL) was added a methyl 2-chloropyrirnidine-4~carboxylate (0.641 g, 3.43 mmol) and the resulting solution was stirred at 60 °C for 16 hours . The reaction was diluted with H20 (200 mL) and extracted with EtOAc (3 x 100 mL) . The combined organic extracts were washed with 0 (3 x 100 mL) , brine (100 mL) , dried over Na2SO,i, filtered, and concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 30% EtOAc in hexanes) to give methyl 6-methyl-2- ( (3aB, 5R, 6aS) -5- (2- ( trifluoromethyl) henyl ) hexahydrocyclopenta [c] yrrol-2 (IH) - yl ) yrimidine-4-carboxylate as an off-white solid (1.20 g, 86%): NMR (300 MHz, CDC13) δ 7.61 (m, IH) , 7.58 (m, 2H) , 7.23 (m, IH) , 7.05 (s, IH) , 3.95 (s, 3H) , 3.82 (m, 4H) , 3.59 (m, IH) , 2.92 (m, 2H) , 2.44 (s, 3H) , 2.40 (m, 2H) , 1.69 (m, 2H) ; MS (ESI+) m/z 406 [M + H]•. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With triethylamine In N,N-dimethyl-formamide at 60℃; | 55.A General Procedure (GP-A) for 2-amiuopyriznidine formation: General procedure: A mixtureof amine I (1 equiv) desired methyl 2-chloropyrimidine-4-carboxylate (1 eguiv), and triethylamine (EC3N) (3 equiv) in DMF (0.25 M( was stirred at 60° C until the reaction was complete by TLC or LCMS, The mixture was diluted with H2O end extracted with EtOAc. The combined organic extracts were washed with H20, brine,dried over Na2004, filtered, and concentrated under reduced pressure. The resulting residue was purified by either normal phase silica gel column chromatography (typical eluents included either a mixture of or hexanes and EtOAc or a mixture of CH2C12 and a 90:9:1 mixture of CH2C12/CH3OH/concentrated NH4OH) or Cl8 reversed phase columnchromatography (typical eluents included CH3CN and H20) to afford the desired ester II. The product structure was verified by 1H NNR and by mass analysis. |
28% | With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 60℃; for 16h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
44% | Stage #1: 4-methoxyl-3-nitrophenylboronic acid; methyl 2-chloro-6-methylpyrimidine-4-carboxylate With bis-triphenylphosphine-palladium(II) chloride; sodium carbonate In 1,4-dioxane; water for 4h; Reflux; Stage #2: With hydrogenchloride In water; ethyl acetate | Sat. aq. Na2CO3 soln (52.5 mE) was added to a soln of methyl 2-chloro-6-methylpyrimidine-4-carboxylate (107; 5.0 g, 26.8 mmol), 4-methoxy-3-nitrophenylboronic acid (108; 6.86 g, 34.8 mmol) and PdC12(PPh3)2 (0.94 g, 1.3 mmol) in dioxane (175 mE). The mixture was heated to reflux for 4 h and partially concentrated, followed by an aqueous workup (EtOAc, 1 M aq. HC1 soln; sat. aq. NaC1 soln; Na2504). The crude product was suspended in CH2C12/ MeOH 2:1; the solid was filtered, washed (MeOH) and dried i.v to afford 109.HC1 (3.7 g, 42%). The filtrate was concentrated and purified by FC(CH2C12/MeOH 100:0 to 70:30) to give 109.HC1 (3.87 g, 44%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
63% | With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 60℃; for 16h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | With triethylamine In N,N-dimethyl-formamide at 60℃; for 16h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
20% | With N-Bromosuccinimide; dibenzoyl peroxide In tetrachloromethane at 80℃; for 48h; Inert atmosphere; | 2 EXAMPLE 2 Synthesis of (S)-2-chloro-6-(((2-oxopyrrolidin-3-yl)amino)methyl)pyrimidine-4-carboxamide (Compound 12) A mixture of Compound 8 (1.536 g, 8.23 mmol) (Sigma- Aldrich), NBS (1.757 g, 9.87 mmol) and benzoyl peroxide (199 mg, 0.823 mmol) in CC14 (43 mL) was purged with argon for 2 min. The mixture was heated at 80 °C under argon for 24 h. Additional NBS (1.757 g, 9.87 mmol) and benzoyl peroxide (199 mg, 0.823 mmol) were added and the mixture heated at 80 °C for an additional 24 h. After cooling to RT, the mixture was filtered and the filtrate concentrated. The residue was adsorbed onto S1O2 and purified by flash chromatography (Si02, 0-40% EtOAc/hexanes) to give 0.44 g (20%) of Compound 9 as a brown liquid. LC/MS: m/z= 266 [M+H]+ (Calc: 265). |
20% | With N-Bromosuccinimide; dibenzoyl peroxide In tetrachloromethane at 80℃; for 48h; Inert atmosphere; | 2 EXAMPLE 2Synthesis of (S)-2-chloro-6-(((2-oxopyrrolidin-3-yl)amino)methyl)pyrimidine-4-carboxamide (Compound 12)A mixture of Compound 8 (1.536 g, 8.23 mmol) (Sigma-Aldrich), NBS (1.757 g, 9.87 mmol) and benzoyl peroxide (199 mg, 0.823 mmol) in CCl4 (43 mL) was purged with argon for 2 min. The mixture was heated at 80 °C under argon for 24 h. Additional NBS (1.757 g, 9.87 mmol) and benzoyl peroxide (199 mg, 0.823 mmol) were added and the mixture heated at 80 °C for an additional 24 h. After cooling toRT, the mixture was filtered and the filtrate concentrated. The residue was adsorbed onto Si02 and purified by flash chromatography (Si02, 0-40% EtOAc/hexanes) to give Compound 9 as a brown liquid (440 mg). Yield 20%. LC/MS: mlz= 266 [M+H]+ (Calc: 265). |
20% | With N-Bromosuccinimide; dibenzoyl peroxide In tetrachloromethane at 80℃; for 24h; Inert atmosphere; | 2 A mixture of Compound 8 (1.536 g, 8.23 mmol) (Sigma-Aldrich), N135 (1.757 g, 9.87 mmol) and benzoyl peroxide (199mg, 0.823 mmol) in CC14 (43 mE) was purged with argon for 2 mm. The mixture was heated at 80° C. under argon for 24 h. Additional N135 (1.757 g, 9.87 mmol) and benzoyl peroxide (199 mg, 0.823 mmol) were added and the mixture heated at 80° C. for an additional 24 h. After cooling to RT, the mixture was filtered and the filtrate concentrated. The residue was adsorbed onto 5i02 and purified by flash chromatography (5i02, 0-40% EtOAc/ hexanes) to give 0.44 g (20%) of Compound 9 as a brown liquid. EC/MS: mlz=266 [M+H] (Calc: 265). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: N-Bromosuccinimide; dibenzoyl peroxide / tetrachloromethane / 48 h / 80 °C / Inert atmosphere 2: N-ethyl-N,N-diisopropylamine / acetonitrile / 2 h / 20 °C 3: ammonia / methanol / 1 h / 20 °C | ||
Multi-step reaction with 3 steps 1: N-Bromosuccinimide; dibenzoyl peroxide / tetrachloromethane / 48 h / 80 °C / Inert atmosphere 2: N-ethyl-N,N-diisopropylamine / acetonitrile / 2 h / 20 °C 3: ammonia / methanol / 1 h / 20 °C | ||
Multi-step reaction with 3 steps 1: N-Bromosuccinimide; dibenzoyl peroxide / tetrachloromethane / 24 h / 80 °C / Inert atmosphere 2: N-ethyl-N,N-diisopropylamine / acetonitrile / 2 h / 20 °C 3: ammonia / methanol / 1 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
30% | With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; caesium carbonate In 1,2-dimethoxyethane; ethanol; water at 85℃; for 3h; Inert atmosphere; | 4 EXAMPLE 4Synthesis of (S)-6-(((2-oxopyrrolidin-3-y1)amino)methy1)-2-(4-(4- (trifluoromethy1)phenoxy)pheny1)pyrimidine-4-carboxamide (Compound 20)A mixture of Compound 7 (9.76 g, 26.8 mmol), Compound 8 (5 g, 26.8 mmol), Cs2C03 (17.46 g, 53.6 mmol), Pd(PPh3hCh (1.5 g, 2.14 mmol) in DME (50 mL), H20 (50 mL) and EtOH (25 mL) was purged with argo and heated at 85 oc for 3h. After cooling to RT the mixture was diluted with EtOAc (200 mL) and brine (100 mL). 1M aq. HCl (20 mL) was used to adjust the pH to 6. The aq. layer was extracted with additional EtOAc (100 mL) and the combined EtOAc portions were dried over Na2S04, filtered and concentrated. The crude material was dissolved in MeOH, 4N HCl in dioxane (10 mL) was added and the mixture stirred at RT overnight. The mixture was concentrated, adsorbed onto Si02 and purified by flash chromatography (Si02, 0-15% EtOAc/hexanes) to give Compound 17 as a white solid (3.2 g, yield 30%): LC/MS: mlz= 389 [M+Ht (Calc: 388). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate; In 1,2-dimethoxyethane; water; at 120℃; for 2h;Microwave irradiation; | 1-128: A degassed soln of methyl 2-chloro-6-methylpyrimidine-4-carboxylate (500 mg, 2.68 mmol), 2-methyl-l-propenylboronic acid pinacol ester (687 mu, 3.35 mmol), Pd(Ph3)4 (310 mg, 0.268 mmol), sodium carbonate (2 aq soln, 2.68 mL, 5.40 mmol) in DME (10 mL) was heated to 120C under microwave radiation for 2 h. The rxn mixture was then cooled to RT and acidified with concentrated aq HCl to a final pH of 2. Minimal water was added (5 mL) and the mixture was extracted with EtOAc (3x25 mL). The combined organics were dried (Na2S04), decanted and concentrated. The resulting crude residue was purified via flash chromatography (Si02; 10-40% 5: 1 : 10 MeOH: AcOH: EtOAc in heptane) to afford compound 1-128. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
28% | With sodium hydride In N,N-dimethyl-formamide at 0 - 100℃; for 18.03h; | 193 (193) Synthesis of 2- {3- [4- (4-chlorophenyl) piperazine-1 -carbonyl] -lH-indol-1 -yl} -6-methylpyrimidine-4-carboxylic acid hydrochloride (Compound 193) 3- [4-(4-chlorophenyl) piperazine-1-carbonyl] -1H-indole (340 mg)Of DMF (2 mL)60% sodium hydride (44 mg) was slowly added to the solution,After stirring at 0 ° C. for 20 minutes,Methyl 2-chloro-6-methylpyrimidine-4-carboxylate (177 mg) was added and the mixture was stirred at 100 ° C. for 18 hours.After cooling the reaction solution to room temperature,Saturated sodium hydrogencarbonate rice plant solution was added and extracted with ethyl acetate,And washed with saturated brine.The organic layer was dried over sodium sulfate,The solvent was evaporated under reduced pressure to obtain a residue,Purification by silica gel column chromatography (hexane-ethyl acetate)Methyl 2- {3- [4- (4-chlorophenyl) piperazine-1 -carbonyl] -1 H-indol-1-yl}-6-methylpyrimidine-4-carboxylate138 mg (yield 28%) was obtained. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1.1: potassium fluoride / tris-(dibenzylideneacetone)dipalladium(0); tri-tert-butyl phosphine / tetrahydrofuran / 8 h / 20 °C / Heating / reflux 2.1: lithium hydroxide; water / tetrahydrofuran / 3 h / 20 °C 2.2: pH ~ 5 3.1: dmap; triethylamine; bromo-tris(1-pyrrolidinyl)phosphonium hexafluorophosphate / dichloromethane / 15 h / 20 °C 4.1: lithium hydroxide; water / tetrahydrofuran / 3 h / 20 °C 4.2: pH ~ 5 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1.1: potassium fluoride / tris-(dibenzylideneacetone)dipalladium(0); tri-tert-butyl phosphine / tetrahydrofuran / 8 h / 20 °C / Heating / reflux 2.1: lithium hydroxide; water / tetrahydrofuran / 3 h / 20 °C 2.2: pH ~ 5 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1.1: potassium fluoride / tris-(dibenzylideneacetone)dipalladium(0); tri-tert-butyl phosphine / tetrahydrofuran / 8 h / 20 °C / Heating / reflux 2.1: lithium hydroxide; water / tetrahydrofuran / 3 h / 20 °C 2.2: pH ~ 5 3.1: dmap; triethylamine; bromo-tris(1-pyrrolidinyl)phosphonium hexafluorophosphate / dichloromethane / 15 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
510 mg | With tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran for 24h; Reflux; | 339.1 Step 1. Synthesis of methyl 4-cyclopropyl-lH-benzo[d]imidazole-2-carboxylate. Cyclopropyl zinc bromide (16.2 mL of 0.5M solution in THF, 8.1 mmol, 1.5 eq) was added to a solution of methyl 2-chloro-6-methylpyrimidine-4-carboxylate (1.0 g, 5.4 mmol, 1 eq), tetrakistriphenylphosphinepalladium(O) (500 mg, 0.43 mmol, 0.08 eq) and THF (30 mL). The resulting black solution was heated at reflux for 24 h. The reaction was allowed to cool to rt, then poured into sat NH4C1 (75 mL) and EtOAc (50 mL). The phases were separated and the aq extracted with EtOAc (2xl0mL). The combined organic phases were dried (sodium sulfate) filtered, and concentrated onto Celite. The residue was purified by chromatography over Si02 with EtO Ac/hexanes to afford 510 mg of the title compound as a colorless solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Inert atmosphere; Reflux; | |
87% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 1.E Step E: A mixture of 4-(2-(trifluoromethyl)phenoxy)piperidine 19 (0.100 g, 0.408 mmol), methyl 2-chloro-6-methylpyrimidine-4- carboxylate (76.1 mg, 0.408 mmol), and i-Pr2NEt (0.21 mL, 1.22 mmol) in THE (10 mL) was heated at reflux for 16 h under an atmosphere of N2. The reaction was concentrated under reduced pressure and the resulting residue was chromatographed over silica gel (0% to 100% EtOAc in hexanes) to give methyl 6-methyl-2-(4-(2- (0204) (trifluoromethyl)phenoxy)piperidin-l-yl)pyrimidine-4-carboxylate 20 as an off-white solid (0.140 g, 87%): MS (ESI+) m/z 396 [M + H]+. |
87% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 1.E Step E: A mixture of 4-(2-(trifluoromethyl)phenoxy)piperidine 19 (0.100 g, 0.408 mmol), methyl 2-chloro-6-methylpyrimidine-4- carboxylate (76.1 mg, 0.408 mmol), and i-Pr2NEt (0.21 mL, 1.22 mmol) in THE (10 mL) was heated at reflux for 16 h under an atmosphere of N2. The reaction was concentrated under reduced pressure and the resulting residue was chromatographed over silica gel (0% to 100% EtOAc in hexanes) to give methyl 6-methyl-2-(4-(2- (0204) (trifluoromethyl)phenoxy)piperidin-l-yl)pyrimidine-4-carboxylate 20 as an off-white solid (0.140 g, 87%): MS (ESI+) m/z 396 [M + H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Inert atmosphere; Reflux; | |
88% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 2.D Step D: A mixture of (±)-3-(2-(trifluoromethyl)phenoxy)pyrrolidine (±)-25 (0.100 g, 0.432 mmol), methyl 2-chloro-6-methylpyrimidine-4- carboxylate (80.6 mg, 0.432 mmol), and i-Pr2NEt (0.23 mL, 1.29 mmol) in THE (10 mL) was heated at reflux for 16 h under an atmosphere of N2. The reaction was allowed to cool to rt and then concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 100% EtOAc in hexanes) to give (±)-methyl 6- methyl-2-(3-(2-(trifluoromethyl)phenoxy)pyrrolidin-l-yl)pyrimidine- 4-carboxylate (±)-26 as an off-white solid (0.145 g, 88%): 1H NMR (400 MHz, CDCI3) δ 7.52 (d, J = 8.0 Hz, 1H), 7.45 (t, J = 7.6 Hz, (0219) 1H), 7.00 (s, 1H), 6.98-6.95 (m, 2H), 5.10 (s, 1H), 4.00-3.86 (m, 3H), 3.89 (s, 3Η), 3.76-3.74 (m, 2Η), 2.38 (s, 3Η), 2.22-2.19 (m, 1Η); ESI MS m/z 382 [M + H]+. |
88% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 2.D Step D: A mixture of (±)-3-(2-(trifluoromethyl)phenoxy)pyrrolidine (±)-25 (0.100 g, 0.432 mmol), methyl 2-chloro-6-methylpyrimidine-4- carboxylate (80.6 mg, 0.432 mmol), and i-Pr2NEt (0.23 mL, 1.29 mmol) in THE (10 mL) was heated at reflux for 16 h under an atmosphere of N2. The reaction was allowed to cool to rt and then concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 100% EtOAc in hexanes) to give (±)-methyl 6- methyl-2-(3-(2-(trifluoromethyl)phenoxy)pyrrolidin-l-yl)pyrimidine- 4-carboxylate (±)-26 as an off-white solid (0.145 g, 88%): 1H NMR (400 MHz, CDCI3) δ 7.52 (d, J = 8.0 Hz, 1H), 7.45 (t, J = 7.6 Hz, (0219) 1H), 7.00 (s, 1H), 6.98-6.95 (m, 2H), 5.10 (s, 1H), 4.00-3.86 (m, 3H), 3.89 (s, 3Η), 3.76-3.74 (m, 2Η), 2.38 (s, 3Η), 2.22-2.19 (m, 1Η); ESI MS m/z 382 [M + H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Inert atmosphere; Reflux; | |
90% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 3.C Step C: A mixture of 3-(2-(trifluoromethyl)phenoxy)azetidine 30 (0228) (0.100 g, 0.460 mmol), methyl 2-chloro-6-methylpyrimidine-4- carboxylate (85.9 mg, 0.460 mmol), and i-Pr2NEt (0.24 mL, 1.38 mmol) in THE (10 mL) was heated at reflux for 16 h under an atmosphere of N2. The reaction was concentrated under reduced pressure and the resulting residue was chromatographed over silica gel (0% to 100% (0229) EtOAc in hexanes) to give methyl 6-methyl-2-(3-(2- (trifluoromethyl)phenoxy)azetidin-l-yl)pyrimidine-4-carboxylate 31 as an off-white solid (0.152 g, 90%): MS (ESI+) m/z [M + H]+. |
90% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 3.C Step C: A mixture of 3-(2-(trifluoromethyl)phenoxy)azetidine 30 (0228) (0.100 g, 0.460 mmol), methyl 2-chloro-6-methylpyrimidine-4- carboxylate (85.9 mg, 0.460 mmol), and i-Pr2NEt (0.24 mL, 1.38 mmol) in THE (10 mL) was heated at reflux for 16 h under an atmosphere of N2. The reaction was concentrated under reduced pressure and the resulting residue was chromatographed over silica gel (0% to 100% (0229) EtOAc in hexanes) to give methyl 6-methyl-2-(3-(2- (trifluoromethyl)phenoxy)azetidin-l-yl)pyrimidine-4-carboxylate 31 as an off-white solid (0.152 g, 90%): MS (ESI+) m/z [M + H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1.64 g | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Inert atmosphere; Reflux; | |
1.64 g | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 4.D Step D: A mixture of 3-((2-(trifluoromethyl)phenoxy)methyl)azetidine 36 (1.0 g, 4.32 mmol), methyl 2-chloro-6-methylpyrimidine-4- carboxylate (0.807 g, 4.32 mmol), and i-Pr2NEt (2.25 mL, 12.9 mmol) in THE (20 mL) was heated at reflux for 16 h under an atmosphere of N2. The reaction was concentrated under reduced pressure and the resulting residue was chromatographed over silica gel (0% to 100% EtOAc in hexanes) to give methyl 6-methyl-2-(3-((2- (trifluoromethyl)phenoxy)methyl)azetidin-l-yl)pyrimidine-4- carboxylate 37 as an off-white solid (1.64 g, 86%): 1H NMR (400 MHz, CDCI3) δ 7.52 (d, J = 7.6 Hz, 1H), 7.45 (t, J = 7.6 Hz, 1H), 7.05 (s, 1H), 7.00-6.95 (m, 2H), 4.33 (t, J = 8.8 Hz, 2H), 4.22-4.21 (m, 2H), 4.08-4.04 (m, 2Η), 3.91 (s, 3Η), 3.18-3.16 (m, 1Η), 2.40 (s, (0243) 3H); ESI MS m/z 382 [M + H]+. |
1.64 g | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 4.D Step D: A mixture of 3-((2-(trifluoromethyl)phenoxy)methyl)azetidine 36 (1.0 g, 4.32 mmol), methyl 2-chloro-6-methylpyrimidine-4- carboxylate (0.807 g, 4.32 mmol), and i-Pr2NEt (2.25 mL, 12.9 mmol) in THE (20 mL) was heated at reflux for 16 h under an atmosphere of N2. The reaction was concentrated under reduced pressure and the resulting residue was chromatographed over silica gel (0% to 100% EtOAc in hexanes) to give methyl 6-methyl-2-(3-((2- (trifluoromethyl)phenoxy)methyl)azetidin-l-yl)pyrimidine-4- carboxylate 37 as an off-white solid (1.64 g, 86%): 1H NMR (400 MHz, CDCI3) δ 7.52 (d, J = 7.6 Hz, 1H), 7.45 (t, J = 7.6 Hz, 1H), 7.05 (s, 1H), 7.00-6.95 (m, 2H), 4.33 (t, J = 8.8 Hz, 2H), 4.22-4.21 (m, 2H), 4.08-4.04 (m, 2Η), 3.91 (s, 3Η), 3.18-3.16 (m, 1Η), 2.40 (s, (0243) 3H); ESI MS m/z 382 [M + H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Inert atmosphere; Reflux; | |
85% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 5.D Step D: To a solution of (±)-tert-butyl 3-((2- (0266) (trifluoromethyl)phenoxy)methyl)pyrrolidine-l-carboxylate (±) -42 (0.265 g 1.08 mmol) in THE (5 mL) were added i-Pr2NEt (0.6 mL, 3.24 mmol) and methyl 2-chloro-6-methylpyrimidine-4-carboxylate (0.242 g, (0267) 1.29 mmol) and the resulting mixture stirred at reflux for 16 h. The mixture was allowed to cool to rt and then concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 50% EtOAc in hexanes) to give (±)-methyl 6-methyl- 2-(3-((2-(trifluoromethyl)phenoxy)methyl)pyrrolidin-l-yl)pyrimidine- (0268) 4-carboxylate (±) -43 as a white solid (0.362 g, 85%): 1H NMR (400 MHz, CDCI3) δ 7.54 (d, J = 7.6 Hz, 1H), 7.44 (t, J = 7.6 Hz, 1H), 6.99 (s, 1H), 6.97-6.92 (m, 2H), 4.10-4.06 (m, 1H), 4.00-3.96 (m, (0269) 1H), 3.91 (s, 3H), 3.89-3.86 (m, 1H), 3.79-3.76 (m, 1H), 3.66-3.61 (m, 1H), 3.51-3.47 (m, 1H), 2.86-2.82 (m, 1H), 2.39 (s, 3H), 2.24- (0270) 2.20 (m, 1H), 1.99-1.94 (m, 1H); ESI MS m/z 396 [M + H]+. |
85% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 5.D Step D: To a solution of (±)-tert-butyl 3-((2- (0266) (trifluoromethyl)phenoxy)methyl)pyrrolidine-l-carboxylate (±) -42 (0.265 g 1.08 mmol) in THE (5 mL) were added i-Pr2NEt (0.6 mL, 3.24 mmol) and methyl 2-chloro-6-methylpyrimidine-4-carboxylate (0.242 g, (0267) 1.29 mmol) and the resulting mixture stirred at reflux for 16 h. The mixture was allowed to cool to rt and then concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 50% EtOAc in hexanes) to give (±)-methyl 6-methyl- 2-(3-((2-(trifluoromethyl)phenoxy)methyl)pyrrolidin-l-yl)pyrimidine- (0268) 4-carboxylate (±) -43 as a white solid (0.362 g, 85%): 1H NMR (400 MHz, CDCI3) δ 7.54 (d, J = 7.6 Hz, 1H), 7.44 (t, J = 7.6 Hz, 1H), 6.99 (s, 1H), 6.97-6.92 (m, 2H), 4.10-4.06 (m, 1H), 4.00-3.96 (m, (0269) 1H), 3.91 (s, 3H), 3.89-3.86 (m, 1H), 3.79-3.76 (m, 1H), 3.66-3.61 (m, 1H), 3.51-3.47 (m, 1H), 2.86-2.82 (m, 1H), 2.39 (s, 3H), 2.24- (0270) 2.20 (m, 1H), 1.99-1.94 (m, 1H); ESI MS m/z 396 [M + H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Inert atmosphere; Reflux; | |
87% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 8.D Step D: To a solution of (±)-3-((2- (trifluoromethyl)phenoxy)methyl)piperidine (±) -60 (0.100 g, 0.385 mmol) in THF (5 mL) were added i-PrzNEt (0.20 mL, 1.16 mmol) and methyl 2-chloro-6-methylpyrimidine-4-carboxylate (71.8 mg, 0.385 mmol) and the resulting mixture stirred at reflux for 16 h under an atmosphere of N2. The mixture was allowed to cool to rt and then concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 50% EtOAc in hexanes) to give (±)-methyl 6-methyl-2-(3-((2- (trifluoromethyl)phenoxy)methyl)piperidin-l-yl)pyrimidine-4- carboxylate (±) -61 as a white solid (0.137 g, 87%): 1H NMR (400 MHz, DMSO-de) δ 7.59-7.55 (m, 2H), 7.22 (d, J= 8.4 Hz, 1H), 7.05 (t, J = 7.6 Hz, 1H), 6.94 (s, 1H), 4.79 (d, J = 12.8 Hz, 1H), 4.55 (d, J = 12.8 Hz, 1H), 4.04-3.96 (m, 2H), 3.80 (s, 3H), 2.93-2.83 (m, 3H), 2.29 (s, 3H), 1.85-1.71 (m, 4H); ESI MS m/z 410 [M + H]+. |
87% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 8.D Step D: To a solution of (±)-3-((2- (trifluoromethyl)phenoxy)methyl)piperidine (±) -60 (0.100 g, 0.385 mmol) in THF (5 mL) were added i-PrzNEt (0.20 mL, 1.16 mmol) and methyl 2-chloro-6-methylpyrimidine-4-carboxylate (71.8 mg, 0.385 mmol) and the resulting mixture stirred at reflux for 16 h under an atmosphere of N2. The mixture was allowed to cool to rt and then concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 50% EtOAc in hexanes) to give (±)-methyl 6-methyl-2-(3-((2- (trifluoromethyl)phenoxy)methyl)piperidin-l-yl)pyrimidine-4- carboxylate (±) -61 as a white solid (0.137 g, 87%): 1H NMR (400 MHz, DMSO-de) δ 7.59-7.55 (m, 2H), 7.22 (d, J= 8.4 Hz, 1H), 7.05 (t, J = 7.6 Hz, 1H), 6.94 (s, 1H), 4.79 (d, J = 12.8 Hz, 1H), 4.55 (d, J = 12.8 Hz, 1H), 4.04-3.96 (m, 2H), 3.80 (s, 3H), 2.93-2.83 (m, 3H), 2.29 (s, 3H), 1.85-1.71 (m, 4H); ESI MS m/z 410 [M + H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Inert atmosphere; Reflux; | |
88% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 9.C Step C: To a solution of (±)-2-(2-(trifluoromethyl)phenyl)-2,7- diazaspiro[4.4]nonane (±)-65 (0.150 g, 0.554 mmol) in THF (5 mL) were added i-Pr2NEt (0.29 mL, 1.66 mmol) and methyl 2-chloro-6- methylpyrimidine-4-carboxylate (0.103 g, 0.554 mmol) and the resulting mixture stirred at reflux for 16 h under an atmosphere of N2. The mixture was allowed to cool to rt and then concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 50% EtOAc in hexanes) to give (±)-methyl 6- methyl-2-(7-(2-(trifluoromethyl)phenyl)-2,7-diazaspiro[4.4]nonan-2- yl)pyrimidine-4-carboxylate (±)-66 as a white solid (0.205 g, 88%): ΧΗ NMR (400 MHz, CDC13) δ 7.55 (d, J = 6.4 Hz, 1H), 7.35 (t, J = 7.6 Hz, 1H), 7.00 (s, 1H), 6.95 (d, J = 8.4 Hz, 1H), 6.87 (t, J = 7.6 Hz, 1H), 3.91 (s, 3H), 3.74-3.61 (m, 4H), 3.47-3.44 (m, 2H), 3.30 (0308) (s, 2H), 2.39 (s, 3H), 2.08-1.93 (m, 4H); ESI MS m/z 421 [M + H]+. |
88% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 9.C Step C: To a solution of (±)-2-(2-(trifluoromethyl)phenyl)-2,7- diazaspiro[4.4]nonane (±)-65 (0.150 g, 0.554 mmol) in THF (5 mL) were added i-Pr2NEt (0.29 mL, 1.66 mmol) and methyl 2-chloro-6- methylpyrimidine-4-carboxylate (0.103 g, 0.554 mmol) and the resulting mixture stirred at reflux for 16 h under an atmosphere of N2. The mixture was allowed to cool to rt and then concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 50% EtOAc in hexanes) to give (±)-methyl 6- methyl-2-(7-(2-(trifluoromethyl)phenyl)-2,7-diazaspiro[4.4]nonan-2- yl)pyrimidine-4-carboxylate (±)-66 as a white solid (0.205 g, 88%): ΧΗ NMR (400 MHz, CDC13) δ 7.55 (d, J = 6.4 Hz, 1H), 7.35 (t, J = 7.6 Hz, 1H), 7.00 (s, 1H), 6.95 (d, J = 8.4 Hz, 1H), 6.87 (t, J = 7.6 Hz, 1H), 3.91 (s, 3H), 3.74-3.61 (m, 4H), 3.47-3.44 (m, 2H), 3.30 (0308) (s, 2H), 2.39 (s, 3H), 2.08-1.93 (m, 4H); ESI MS m/z 421 [M + H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
63% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Inert atmosphere; Reflux; | |
63% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 11.C Step C: To a solution of ((±)--N-(pyrrolidin-3-ylmethyl)-2- (0324) (trifluoromethyl)aniline (±)-74 (0.360 g, 1.16 mmol) in THF (5 mL) were added i-PrzNEt (0.61 mL, 3.48 mmol) and methyl 2-chloro-6- methylpyrimidine-4-carboxylate (0.216 g, 1.16 mmol) and the resulting mixture stirred at reflux for 16 h under an atmosphere of N2. The mixture was allowed to cool to rt and then concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 50% EtOAc in hexanes) to give (±)-methyl 6- methyl-2-(3-(((2-(trifluoromethyl)phenyl)amino)methyl)pyrrolidin-1- yl)pyrimidine-4-carboxylate (±)-75 as a white solid (0.290 g, 63%): 1Η NMR (400 MHz, CDC13) δ 7.43-7.40 (m, 1H), 7.35-7.31 (m, 1H), 7.00 (s, 1H), 6.71-6.68 (m, 2H), 4.40 (brs, 1H), 3.91 (s, 3H), 3.90-3.86 (m, 1H), 3.79-3.58 (m, 1H), 3.41-3.19 (m, 4H), 2.68-2.62 (m, 1H), 2.40 (s, 3H), 2.22-2.16 (m, 1H), 1.82-1.77 (m, 1H) ; ESI MS m/z 395 [M + H]+. |
63% | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Reflux; Inert atmosphere; | 11.C Step C: To a solution of ((±)--N-(pyrrolidin-3-ylmethyl)-2- (0324) (trifluoromethyl)aniline (±)-74 (0.360 g, 1.16 mmol) in THF (5 mL) were added i-PrzNEt (0.61 mL, 3.48 mmol) and methyl 2-chloro-6- methylpyrimidine-4-carboxylate (0.216 g, 1.16 mmol) and the resulting mixture stirred at reflux for 16 h under an atmosphere of N2. The mixture was allowed to cool to rt and then concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 50% EtOAc in hexanes) to give (±)-methyl 6- methyl-2-(3-(((2-(trifluoromethyl)phenyl)amino)methyl)pyrrolidin-1- yl)pyrimidine-4-carboxylate (±)-75 as a white solid (0.290 g, 63%): 1Η NMR (400 MHz, CDC13) δ 7.43-7.40 (m, 1H), 7.35-7.31 (m, 1H), 7.00 (s, 1H), 6.71-6.68 (m, 2H), 4.40 (brs, 1H), 3.91 (s, 3H), 3.90-3.86 (m, 1H), 3.79-3.58 (m, 1H), 3.41-3.19 (m, 4H), 2.68-2.62 (m, 1H), 2.40 (s, 3H), 2.22-2.16 (m, 1H), 1.82-1.77 (m, 1H) ; ESI MS m/z 395 [M + H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
0.11 g | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran for 16h; Inert atmosphere; Reflux; | |
0.11 g | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran at 80℃; for 16h; Inert atmosphere; | 12.C Step C: To a solution of (±) -3- ( (2- (0336) (trifluoromethyl)benzyl)oxy)pyrrolidine (±)-78 (0.100 g, 0.407 mmol) in THF (5 mL) were added i-Pr2NEt (0.25 mL, 1.23 mmol) and methyl 2- chloro-6-methylpyrimidine-4-carboxylate (76.2 mg, 0.408 mmol) and the resulting solution was stirred at 80 °C for 16 h under an atmosphere of N2. The mixture was allowed to cool to rt and then concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 50% EtOAc in hexanes) to give (±)-methyl 6-methyl-2-(3-((2-(trifluoromethyl)benzyl)oxy)pyrrolidin- 1-yl)pyrimidine-4-carboxylate (±)-79 as a white solid (0.110 g, (0337) 68%): 1H NMR (400 MHz, acetone-d6) δ 7.75-7.68 (m, 2H), 7.62 (t, J = 7.2 Hz, 1H), 7.47 (t, J = 7.6 Hz, 1H), 6.97 (s, 1H), 4.78-4.76 (m, 2H), 4.41-4.39 (m, 1H), 3.85 (s, 3H), 3.74-3.66 (m, 4H), 2.36 (s, (0338) 3H), 2.31-2.04 (m, 2H); ESI MS m/z 396 [M + H]+. |
0.11 g | With N-ethyl-N,N-diisopropylamine In tetrahydrofuran at 80℃; for 16h; Inert atmosphere; | 12.C Step C: To a solution of (±) -3- ( (2- (0336) (trifluoromethyl)benzyl)oxy)pyrrolidine (±)-78 (0.100 g, 0.407 mmol) in THF (5 mL) were added i-Pr2NEt (0.25 mL, 1.23 mmol) and methyl 2- chloro-6-methylpyrimidine-4-carboxylate (76.2 mg, 0.408 mmol) and the resulting solution was stirred at 80 °C for 16 h under an atmosphere of N2. The mixture was allowed to cool to rt and then concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0% to 50% EtOAc in hexanes) to give (±)-methyl 6-methyl-2-(3-((2-(trifluoromethyl)benzyl)oxy)pyrrolidin- 1-yl)pyrimidine-4-carboxylate (±)-79 as a white solid (0.110 g, (0337) 68%): 1H NMR (400 MHz, acetone-d6) δ 7.75-7.68 (m, 2H), 7.62 (t, J = 7.2 Hz, 1H), 7.47 (t, J = 7.6 Hz, 1H), 6.97 (s, 1H), 4.78-4.76 (m, 2H), 4.41-4.39 (m, 1H), 3.85 (s, 3H), 3.74-3.66 (m, 4H), 2.36 (s, (0338) 3H), 2.31-2.04 (m, 2H); ESI MS m/z 396 [M + H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
3 g | Stage #1: sodium methylate; methyl 2-chloro-6-methylpyrimidine-4-carboxylate In methanol at 20℃; for 1h; Stage #2: With hydrogenchloride at 0℃; | F5.K5.1 F5.K5.1 2-Methoxy-b-methyl-pyrimidine-4-carboxyHc acid Methyl 2-chloro-methylpyrimidine-4-carboxylate (5.0g) was suspended in MeOH (67mL) and NaOH 1N (67mL) was added. The mixture was stirred for 1h at RT, then MeOH was evaporated off. At 0°C the mixture was acidified to pH=2 with HCI (25%). The crystals were filtrated, washed with water and heptane and dried at HV at 35°C overnight to give 3.0g beige crystals 1H NMR (400 MHz, DMSO) d: 13.67-13.76 (m, 1 H), 7.52 (s, 1 H), 3.94 (s, 3 H), 2.50 (s, 3 H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | With N-ethyl-N,N-diisopropylamine In acetonitrile at 80℃; | Intermediate Z9 methyl 2-((2-((tert-butoxycarbonyl)amino)ethyl)amino)-6-methylpyrimidine-4-carboxylate. To a solution of methyl 2-chloro-6-methylpyrimidine-4-carboxylate (200 mg, 1.08 mmol) and DIPEA (0.56 mL, 3.23 mmol) in CH3CN (5 mL) was added tert-butyl (2-aminoethyl)carbamate (259 mg, 1.62 mmol). The reaction mixture was heated to 80 °C overnight. The reaction was monitored by UPLC. Upon completion, the reaction mixture was purified by reverse column to give Z9 (248 mg, 0.8 mmol, 74% yield) as white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-ethyl-N,N-diisopropylamine In acetonitrile at 80℃; for 10h; | 165 A mixture of tert-butyl (4-aminocyclohexyl)carbamate (0.2 mmol), methyl 2-chloro-6-methylpyrimidine-4-carboxylate (0.2 mmol) and DIPEA (0.4 mmol) in MeCN was stirred at 80 oC for 10 h. The reaction was monitored by LC-MS and upon completion; the solvent was evaporated under reduced pressure to obtain methyl 2-chloro-6-methylpyrimidine-4-carboxylate. This intermediate was used for the next step without further purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-ethyl-N,N-diisopropylamine In acetonitrile at 80℃; for 10h; | 166 A mixture of N-(2-aminoethyl)acetamide (0.2 mmol), methyl 2-chloro-6-methylpyrimidine-4-carboxylate (0.2 mmol) and DIPEA (0.4 mmol) in MeCN was stirred at 80 oC for 10 h. The reaction was monitored by LC-MS and upon completion; the solvent was evaporated under reduced pressure to obtain methyl 2-((2-acetamidoethyl)amino)-6-methylpyrimidine-4-carboxylate. This intermediate was used for the next step without further purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
60% | With tris(methyl)aluminum In toluene at 100℃; for 1h; Microwave irradiation; | 6.1 2-chl oro-6-methyl -A'-fpyri din-3 -yl)pyrimidine-4-carboxamide To a solution of methyl 2-chloro-6-methylpyrimidine-4-carboxylate (250 mg, 1.34 mmol) in toluene was added pyri din-3 -amine (126 mg, 1,34 mmol) and 2M trimethylaluminum solution in toluene (1.34 mL, 2.68 mmol). The reaction mixture was stirred in a CEM microwave at 100 °C for 1 hr. The reaction mixture was cooled to RT, quenched with water then extracted with ethyl acetate. The organic layer was dried over sodium sulfate and evaporated under reduced pressure to obtain crude material which was purified by Combiflash column chromatography using ethyl acetate- hexane gradient. The target compound eluted at about 50% ethyl acetate-hexane. The pure fractions were collected and evaporated to afford 2-chloro-6- methyl-A-(pyridin-3-yl)pyrimidine-4-carboxamide (0.20 g, 60% yield) as a pale yellow solid. ]H NMR (400 MHz, DMSO-de) 5 10.90 (s, 1H), 9.0 (s, 1H), 8.36 - 8.35 (m, 1H), 8.25 - 8.23 (m, 1H), 8.04 (s, 1H), 7.43 - 7.36 (m, 1 H), 2.61 (s, 31 1 ) LCMS(ES) m/z - 249.0 [M+Hf. |
Tags: 89793-11-3 synthesis path| 89793-11-3 SDS| 89793-11-3 COA| 89793-11-3 purity| 89793-11-3 application| 89793-11-3 NMR| 89793-11-3 COA| 89793-11-3 structure
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P312 | Call a POISON CENTER or doctor/physician if you feel unwell. |
P313 | Get medical advice/attention. |
P314 | Get medical advice/attention if you feel unwell. |
P315 | Get immediate medical advice/attention. |
P320 | |
P302 + P352 | IF ON SKIN: wash with plenty of soap and water. |
P321 | |
P322 | |
P330 | Rinse mouth. |
P331 | Do NOT induce vomiting. |
P332 | IF SKIN irritation occurs: |
P333 | If skin irritation or rash occurs: |
P334 | Immerse in cool water/wrap n wet bandages. |
P335 | Brush off loose particles from skin. |
P336 | Thaw frosted parts with lukewarm water. Do not rub affected area. |
P337 | If eye irritation persists: |
P338 | Remove contact lenses, if present and easy to do. Continue rinsing. |
P340 | Remove victim to fresh air and keep at rest in a position comfortable for breathing. |
P341 | If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing. |
P342 | If experiencing respiratory symptoms: |
P350 | Gently wash with plenty of soap and water. |
P351 | Rinse cautiously with water for several minutes. |
P352 | Wash with plenty of soap and water. |
P353 | Rinse skin with water/shower. |
P360 | Rinse immediately contaminated clothing and skin with plenty of water before removing clothes. |
P361 | Remove/Take off immediately all contaminated clothing. |
P362 | Take off contaminated clothing and wash before reuse. |
P363 | Wash contaminated clothing before reuse. |
P370 | In case of fire: |
P371 | In case of major fire and large quantities: |
P372 | Explosion risk in case of fire. |
P373 | DO NOT fight fire when fire reaches explosives. |
P374 | Fight fire with normal precautions from a reasonable distance. |
P376 | Stop leak if safe to do so. Oxidising gases (section 2.4) 1 |
P377 | Leaking gas fire: Do not extinguish, unless leak can be stopped safely. |
P378 | |
P380 | Evacuate area. |
P381 | Eliminate all ignition sources if safe to do so. |
P390 | Absorb spillage to prevent material damage. |
P391 | Collect spillage. Hazardous to the aquatic environment |
P301 + P310 | IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. |
P301 + P312 | IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. |
P301 + P330 + P331 | IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. |
P302 + P334 | IF ON SKIN: Immerse in cool water/wrap in wet bandages. |
P302 + P350 | IF ON SKIN: Gently wash with plenty of soap and water. |
P303 + P361 + P353 | IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. |
P304 + P312 | IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell. |
P304 + P340 | IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. |
P304 + P341 | IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing. |
P305 + P351 + P338 | IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
P306 + P360 | IF ON CLOTHING: Rinse Immediately contaminated CLOTHING and SKIN with plenty of water before removing clothes. |
P307 + P311 | IF exposed: call a POISON CENTER or doctor/physician. |
P308 + P313 | IF exposed or concerned: Get medical advice/attention. |
P309 + P311 | IF exposed or if you feel unwell: call a POISON CENTER or doctor/physician. |
P332 + P313 | IF SKIN irritation occurs: Get medical advice/attention. |
P333 + P313 | IF SKIN irritation or rash occurs: Get medical advice/attention. |
P335 + P334 | Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages. |
P337 + P313 | IF eye irritation persists: Get medical advice/attention. |
P342 + P311 | IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician. |
P370 + P376 | In case of fire: Stop leak if safe to Do so. |
P370 + P378 | In case of fire: |
P370 + P380 | In case of fire: Evacuate area. |
P370 + P380 + P375 | In case of fire: Evacuate area. Fight fire remotely due to the risk of explosion. |
P371 + P380 + P375 | In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion. |
Storage | |
Code | Phrase |
P401 | |
P402 | Store in a dry place. |
P403 | Store in a well-ventilated place. |
P404 | Store in a closed container. |
P405 | Store locked up. |
P406 | Store in corrosive resistant/ container with a resistant inner liner. |
P407 | Maintain air gap between stacks/pallets. |
P410 | Protect from sunlight. |
P411 | |
P412 | Do not expose to temperatures exceeding 50 oC/ 122 oF. |
P413 | |
P420 | Store away from other materials. |
P422 | |
P402 + P404 | Store in a dry place. Store in a closed container. |
P403 + P233 | Store in a well-ventilated place. Keep container tightly closed. |
P403 + P235 | Store in a well-ventilated place. Keep cool. |
P410 + P403 | Protect from sunlight. Store in a well-ventilated place. |
P410 + P412 | Protect from sunlight. Do not expose to temperatures exceeding 50 oC/122oF. |
P411 + P235 | Keep cool. |
Disposal | |
Code | Phrase |
P501 | Dispose of contents/container to ... |
P502 | Refer to manufacturer/supplier for information on recovery/recycling |
Physical hazards | |
Code | Phrase |
H200 | Unstable explosive |
H201 | Explosive; mass explosion hazard |
H202 | Explosive; severe projection hazard |
H203 | Explosive; fire, blast or projection hazard |
H204 | Fire or projection hazard |
H205 | May mass explode in fire |
H220 | Extremely flammable gas |
H221 | Flammable gas |
H222 | Extremely flammable aerosol |
H223 | Flammable aerosol |
H224 | Extremely flammable liquid and vapour |
H225 | Highly flammable liquid and vapour |
H226 | Flammable liquid and vapour |
H227 | Combustible liquid |
H228 | Flammable solid |
H229 | Pressurized container: may burst if heated |
H230 | May react explosively even in the absence of air |
H231 | May react explosively even in the absence of air at elevated pressure and/or temperature |
H240 | Heating may cause an explosion |
H241 | Heating may cause a fire or explosion |
H242 | Heating may cause a fire |
H250 | Catches fire spontaneously if exposed to air |
H251 | Self-heating; may catch fire |
H252 | Self-heating in large quantities; may catch fire |
H260 | In contact with water releases flammable gases which may ignite spontaneously |
H261 | In contact with water releases flammable gas |
H270 | May cause or intensify fire; oxidizer |
H271 | May cause fire or explosion; strong oxidizer |
H272 | May intensify fire; oxidizer |
H280 | Contains gas under pressure; may explode if heated |
H281 | Contains refrigerated gas; may cause cryogenic burns or injury |
H290 | May be corrosive to metals |
Health hazards | |
Code | Phrase |
H300 | Fatal if swallowed |
H301 | Toxic if swallowed |
H302 | Harmful if swallowed |
H303 | May be harmful if swallowed |
H304 | May be fatal if swallowed and enters airways |
H305 | May be harmful if swallowed and enters airways |
H310 | Fatal in contact with skin |
H311 | Toxic in contact with skin |
H312 | Harmful in contact with skin |
H313 | May be harmful in contact with skin |
H314 | Causes severe skin burns and eye damage |
H315 | Causes skin irritation |
H316 | Causes mild skin irritation |
H317 | May cause an allergic skin reaction |
H318 | Causes serious eye damage |
H319 | Causes serious eye irritation |
H320 | Causes eye irritation |
H330 | Fatal if inhaled |
H331 | Toxic if inhaled |
H332 | Harmful if inhaled |
H333 | May be harmful if inhaled |
H334 | May cause allergy or asthma symptoms or breathing difficulties if inhaled |
H335 | May cause respiratory irritation |
H336 | May cause drowsiness or dizziness |
H340 | May cause genetic defects |
H341 | Suspected of causing genetic defects |
H350 | May cause cancer |
H351 | Suspected of causing cancer |
H360 | May damage fertility or the unborn child |
H361 | Suspected of damaging fertility or the unborn child |
H361d | Suspected of damaging the unborn child |
H362 | May cause harm to breast-fed children |
H370 | Causes damage to organs |
H371 | May cause damage to organs |
H372 | Causes damage to organs through prolonged or repeated exposure |
H373 | May cause damage to organs through prolonged or repeated exposure |
Environmental hazards | |
Code | Phrase |
H400 | Very toxic to aquatic life |
H401 | Toxic to aquatic life |
H402 | Harmful to aquatic life |
H410 | Very toxic to aquatic life with long-lasting effects |
H411 | Toxic to aquatic life with long-lasting effects |
H412 | Harmful to aquatic life with long-lasting effects |
H413 | May cause long-lasting harmful effects to aquatic life |
H420 | Harms public health and the environment by destroying ozone in the upper atmosphere |
Sorry,this product has been discontinued.
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