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CAS No. : | 72934-37-3 | MDL No. : | MFCD00001289 |
Formula : | C10H9ClO2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | YAHLWSGIQJATGG-UHFFFAOYSA-N |
M.W : | 196.63 | Pubchem ID : | 98606 |
Synonyms : |
|
Num. heavy atoms : | 13 |
Num. arom. heavy atoms : | 6 |
Fraction Csp3 : | 0.3 |
Num. rotatable bonds : | 2 |
Num. H-bond acceptors : | 2.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 50.38 |
TPSA : | 37.3 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | Yes |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -5.82 cm/s |
Log Po/w (iLOGP) : | 1.91 |
Log Po/w (XLOGP3) : | 2.36 |
Log Po/w (WLOGP) : | 2.39 |
Log Po/w (MLOGP) : | 2.45 |
Log Po/w (SILICOS-IT) : | 2.87 |
Consensus Log Po/w : | 2.4 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.56 |
Log S (ESOL) : | -2.76 |
Solubility : | 0.345 mg/ml ; 0.00176 mol/l |
Class : | Soluble |
Log S (Ali) : | -2.78 |
Solubility : | 0.324 mg/ml ; 0.00165 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -3.21 |
Solubility : | 0.121 mg/ml ; 0.000617 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 1.38 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319 | 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 |
---|---|---|
95% | Reflux | The cyclopropanecarbonitrile ( 18 gm) obtained in example 1 was added to 20percent sulfuric acid (184ml). The temperature of the reaction mass was slowly raised and maintained at reflux for 10-12 hours. After 12 hours , ethyl acetate was used to extract the product. The acid product from the organic layer was then extracted into 20percent NaOH solution. The aqueous layer was then acidified to pH 2-4 with concentrated HCl. The white solid product obtained was filtered and washed with water. The product p- chlorophenylcyclopropanecarboxylic acid was dried. The yield was 90-95percent and the product had apurity of 99.4percent by HPLC. The melting point was 152-1550C. |
90.3% | With sodium hydroxide In water; diethylene glycol for 18 h; Reflux | A stirred solution of 1-(4-chlorophenyl)cyclopropane-1-carbonitrile (step 1, 30.0 g, 169.49 mmol, 1.0 eq), sodium hydroxide (20.3 g, 508.47 mmol, 3.0 eq), diethylene glycol(120 ml) and water (35.4 ml) was refluxed for about 18 hours. TLC indicated startingmaterial was consumed and the desired product was observed. The reaction mixture was poured into water (1800 ml) and acidified to pH4.0 with concentrated HC1 (54 ml). The generated crystals were collected by filtration and dried under vacuum to obtain the desired product (30.0 g, 90.3percent yield) as a pale-brown colour solid. ‘H NMR (300 MHz, DMSO-d6):ppm 12.40 (br.s., 1H), 7.34 (m, 4H), 1.48-1.42 (m, 2H), 1.16-1.10 (m, 2H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | With sulfuric acid; water;Reflux; | The cyclopropanecarbonitrile ( 18 gm) obtained in example 1 was added to 20% sulfuric acid (184ml). The temperature of the reaction mass was slowly raised and maintained at reflux for 10-12 hours. After 12 hours , ethyl acetate was used to extract the product. The acid product from the organic layer was then extracted into 20% NaOH solution. The aqueous layer was then acidified to pH 2-4 with concentrated HCl. The white solid product obtained was filtered and washed with water. The product p- chlorophenylcyclopropanecarboxylic acid was dried. The yield was 90-95% and the product had apurity of 99.4% by HPLC. The melting point was 152-1550C. |
90.3% | With sodium hydroxide; In water; diethylene glycol; for 18h;Reflux; | A stirred solution of 1-(4-chlorophenyl)cyclopropane-1-carbonitrile (step 1, 30.0 g, 169.49 mmol, 1.0 eq), sodium hydroxide (20.3 g, 508.47 mmol, 3.0 eq), diethylene glycol(120 ml) and water (35.4 ml) was refluxed for about 18 hours. TLC indicated startingmaterial was consumed and the desired product was observed. The reaction mixture was poured into water (1800 ml) and acidified to pH4.0 with concentrated HC1 (54 ml). The generated crystals were collected by filtration and dried under vacuum to obtain the desired product (30.0 g, 90.3% yield) as a pale-brown colour solid. ?H NMR (300 MHz, DMSO-d6):ppm 12.40 (br.s., 1H), 7.34 (m, 4H), 1.48-1.42 (m, 2H), 1.16-1.10 (m, 2H). |
77% | With sodium hydroxide; In methanol; water; at 100 - 105℃; for 14h;Inert atmosphere; | A mixture of nitrile 11 (1.42 g, 8.0 mmol) and NaOH (6.4 g, 160 mmol) in MeOH (40mL) and water (26 mL) was stirred at 100 - 105 C for 14 h under an Ar atmosphere.The mixture was cool down to room temperature and quenched with water, whichwas washed twice with Et2O. 6 M-HCl aq. was added to adjust theseparated water phase to pH = 1. Water phase was extracted twice with AcOEt, and the combinedorganic phase was washed with water, brine, dried (Na 2SO4) and concentrated to give the desiredcarboxylic acid intermediate [4] (1.21g, 77%), which was sufficiently pure without anypurification for the next step.Pale yellow crystals: mp 153 - 155 C [lit.[1] 154 - 156 C]; |
With sulfuric acid; water;Reflux; | EXAMPLE 2; Preparation of p-chlorophenycyclopropane carboxylic acid; The cyclopropanecarbonitrile (18 gm) obtained in example 1 was added to 20% sulfuric acid (184 ml). The temperature of the reaction mass was slowly raised and maintained at reflux for 10-12 hours. After 12 hours, ethyl acetate was used to extract the product. The acid product from the organic layer was then extracted into 20% NaOH solution. The aqueous layer was then acidified to pH 2-4 with concentrated HCl. The white solid product obtained was filtered and washed with water. The product p-chlorophenylcyclopropanecarboxylic acid was dried. The yield was 90-95% and the product had a purity of 99.4% by HPLC. The melting point was 152-155 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | With nitric acid; at -30 - -20℃; for 0.25h; | 350 ml rauchende Salpetersure werden bei -25 bis -30C portionsweise mit 50.0 g (0.21 Mol) 1-(4-Chlor-phenyl)-cyclopropancarbonsure versetzt. Nach beendeter Zugabe wird noch 15 Minuten bei -25C gerhrt und anschlieend auf Eis gegossen. Die ausgefallene Substanz wird abgesaugt, mit Wasser gewaschen und getrocknet. Ausbeute: 58.5 g (95 % der Theorie), Rf-Wert: 0.43 (Kieselgel; Methylenchlorid/Methanol = 9.5:0.5) |
With nitric acid; | e. 1-(4-Chloro-3-nitrophenyl)-cyclopropanecarboxylic acid 350 ml fuming nitric acid are combined batchwise at -25 to -30 C. with 50.0 g (0.21 mol) of 1-(4-chloro-phenyl)-cyclopropanecarboxylic acid. After it has all been added the mixture is stirred for a further 15 minutes at -25 C. and then poured onto ice. The substance precipitated is suction filtered, washed with water and dried. Yield: 58.5 g (95% of theory), Rf value: 0.43 (silica gel; methylene chloride/methanol=9.5:0.5); | |
8 g | With nitric acid; at -30℃; for 0.25h; | Step 1): Compound 51 (7.0 g, 35.7 mmol) was added to 50 mL of fuming nitric acid in batches at -30 C. After the addition, the mixture was stirred at -30 C for 15 min.The reaction solution was slowly poured into 100 mL of ice water, filtered, and dried to obtain 8.0 g of the product as a yellow solid (Compound 52). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With oxalyl dichloride;N,N-dimethyl-formamide; In dichloromethane; at 0 - 25℃; for 2h; | Step 2.; 1-(4-chlorophenyl)cyclopropanecarbonyl chloride; A catalytic amount of N,N-dimethylformamide (DMF)(10 muL) was added to a mixture of 1-(4-chlorophenyl)cyclopropanecarboxylic acid (1.0 g, 5.1 mmol) and oxalyl chloride (2.2 mL, 25 mmol) in methylene chloride (5 mL) at 0° C. The resulting mixture was stirred at room temperature (about 25° C.) for 2 h. The volatiles were removed under reduced pressure, and the resulting residue was co-evaporated with toluene (2.x.) to provide the crude product, 1-(4-chlorophenyl)cyclopropanecarbonyl chloride, which was used in next step without further purification. | |
With oxalyl dichloride;N,N-dimethyl-formamide; In dichloromethane; at 0 - 20℃;Product distribution / selectivity; | A suspension of commercially available 1-(4-chlorophenyl)cyclopropanecarboxylic acid (0.41 g, 2.1 mmol) in DCM (3 mL) was charged with oxalyl chloride (0.35 mL, 4.0 mmol) and N,N-dimethylformamide (5 muL) and stirred 2 h at ambient temperature. The reaction mixture was concentrated under reduced pressure. The resulting acid chloride was diluted with 1,2-dichloroethane (4 mL) and then added to a solution of methyl 6-(3-endo-amino-8-azabicyclo[3.2.1]octan-8-yl)nicotinate (0.18 g, 0.70 mmol), DIEA (0.24 mL, 1.4 mmol) and DMAP (10 mg) in 1,2-dichloroethane (2 mL). After stirring 2 h, the reaction mixture was diluted with EtOAc, washed with satd NaHCO3 and brine, dried (anhyd Na2SO4) and concentrated under reduced pressure. The residue was purified by chromatography (silica, EtOAc/Hex, 20:80 to 75:25) to afford the title compound (0.31 g, quant) as a white solid. 1H NMR (400 MHz, DCM-d2): delta 8.63 (s, 1H); MS (EI): 440 (MH+).; Example 56-[3-endo-({([1-(4-chlorophenyl)cyclopropyl]carbonyl}amino)-8-azabicyclo[3.2.1]oct-8-yl]pyridine-3-carboxamide A solution of commercially available 1-(4-chlorophenyl)-1-cyclopropanecarboxylic acid (7.4 g, 38 mmol) in DCM (75 mL) was chilled to 0° C. and treated with oxalyl chloride (6.6 mL, 76 mmol) and DMF (0.1 mL). The ice-water bath was removed and the reaction mixture was allowed to stir 3 hours at room temperature. The volatiles were removed under reduced pressure and co-evaporated with toluene (2.x.2 mL). The resulting acid chloride was diluted with DCE (40 mL) and added to a cooled (0° C.) solution of ethyl 3-endo-amino-8-azabicyclo[3.2.1]octane-8-carboxylate (5.0 g, 25 mmol) (made by adding ethyl carbonochloridate to the compound from Example 1 (B)), DIEA (8.8 mL, 50 mmol) and DMAP (154 mg, 1.3 mmol) in DCE (85 mL). The ice-water bath was removed and the reaction mixture was allowed to warm to room temperature. After 16 hours, the mixture was diluted with DCM (400 mL), washed with water (100 mL), then dried (anhyd Na2SO4) and filtered. The filtrate was concentrated under reduced pressure to give a residue that was purified by flash chromatography (silica gel, EtOAc/Hex, 50:50 to 80:20) to afford ethyl 3-endo-(1-(4-chlorophenyl)cyclopropane-carboxamido)-8-azabicyclo[3.2.1]octane-8-carboxylate (4.4 g, 42percent) as a yellow crystalline solid. 1H NMR (400 MHz, CDCl3): delta 7.41-7.34 (m, 4H), 5.73 (d, J=7.5 Hz, 1H), 4.23-4.02 (m, 5H), 2.21-1.96 (m, 2H), 1.90-1.81 (m, 2H), 1.62-1.57 (m, 2H), 1.56-1.44 (m, 2H), 1.25-1.09 (m, 5H), 1.05-1.00 (m, 2H). | |
With thionyl chloride;N,N-dimethyl-formamide; In toluene; at 20 - 50℃; | 1-(4-Chlorophenyl)-cyclopropanecarboxylic acid (2 g, 10.2 mmol) was dissolved in 20 mL dry toluene. Thionyl chloride (2.42 g, 20.4 mmol) was added dropwise at room temperature and a catalytic amount of dry DMF was added. The resultant mixture was stirred at 50 0C for 2 hours. The reaction mixture was concentrated under high vacuum at 60 0C, the residue was dissolved in 10 ml_ DCM and thiosemicarbazide (1.12 g, 10.224 mmol) in a mixture of DMF: DCM (1 :4, 50 ml_) was added at 5-10 0C. The mixture was stirred at room temperature overnight under a nitrogen atmosphere and then the reaction mixture was concentrated under reduced pressure. The residue was dissolved in 200 ml. EtOAc and extracted with water (2x200mL), NaHCO3 (2x200 ml_) and brine (1x200 ml_). After concentration the product was precipitated by petroleum ether to give [[1-(4-chlorophenyl) cyclopropane-carbonyl]amino]thiourea in 32.7 percent yield (900 mg)MS: m/z 270 (M+H) HPLC purity: 99.0percent, NMR (300 MHz, DMSO-d6) delta ppm 1.01 (t, 2 H), 1.1.4 (m, 2H), 7.35 (d, 2 H) 7.45 (d, 2 H). |
With oxalyl dichloride;N,N-dimethyl-formamide; In dichloromethane; for 2h; | Example 392-[1-(4-chlorophenyl)cyclopropyl]-N-[1-oxo-4-(trifluoromethyl)phthalazin-2(1H)-yl]acetamideA solution of 1-(4-chlorophenyl)cyclopropanecarboxylic acid (0.3502 g, 1.781 mmol) and oxalyl dichloride (0.20 mL, 2.293 mmol) in dichloromethane (6 mL) containing a catalytic amount of DMF was stirred for 2 hours, concentrated, and re-dissolved in acetonitrile (5 mL) and THF (5 mL), and cooled to 0° C. A solution of (diazomethyl)trimethylsilane in Et2O (2M, 1.78 mL, 3.56 mmol) was added, stirred for 4 hours, allowing to warm to room temperature, concentrated, diluted with EtOAc, washed with saturated aqueous NaHCO3 and brine, dried (Na2SO4), filtered, and concentrated to give 355 mg of crude product as a dark oil, which was used without purification.A solution of the above crude 1-(1-(4-chlorophenyl)cyclopropyl)-2-diazoethanone (0.050 g, 0.23 mmol), the product from Example 11B (0.0505 g, 0.22 mmol), triethylamine (0.12 mL, 0.86 mmol), and silver benzoate (0.0504 g, 0.220 mmol) in DMF (1 mL) were stirred for 2 hours at 70° C., diluted with EtOAc, washed with saturated aqueous NaHCO3 and brine, dried (Na2SO4), and filtered. The residue was chromatographed on SiO2 (30percent EtOAc/hexanes) to give the title compound (23.0 mg, 0.055 mmol) as a white solid: 1H NMR (300 MHz, DMSO-d6) delta ppm 11.56 (s, 1H), 8.41-8.44 (m, 1H), 7.95-8.20 (m, 3H), 7.22-7.42 (m, 4H), 2.72 (d, J=1.0 Hz, 2H), 1.04-1.10 (m, 2H), 0.84-0.90 (m, 2H); MS (ESI+) M/Z 422 (M+H)+, 439 (M+NH4)+. | |
With thionyl chloride; In dichloromethane; at 50℃; for 1h;Inert atmosphere; | General procedure: Thionyl chloride (4 eq) was added dropwise to an oven dried round bottomed flask containingcommercially available acid 1a-f (0.212 mmol ? 29.0 mmol) and dichloromethane (0.3 M). The reactionwas stirred at 50 °C for one hour. The resulting solution was concentrated under vacuum and redissolvedin dichloromethane (20 mL, 0.11 M) and added dropwise to a round bottom flask at 0 °C containing 4-piperidone (1.26 eq), triethylamine (7.5 eq), and THF (0.06 M). After 15 minutes the solution wasrefluxed at 50 °C for 24 hours. The reaction was carefully quenched with saturated aqueous ammoniumchloride and extracted with chloroform (3 x 20 mL). The resultant organic layers were combined anddried over Na2SO4, decanted and concentrated under vacuum. Product purification was achieved by silicagel flash chromatography (40percent ethyl acetate/60percent hexane). | |
With thionyl chloride;N,N-dimethyl-formamide; In dichloromethane; at 20℃; for 0.5h; | CM. l-(4-chlorophenyl)-N-(5-methyl-6-(5-methyl-6-oxo-L6-dihvdropyridin-3- yl)pyridin-2-yl)cvclopropanecarboxamide; Step a: 1 -(4-chlorophenyl)-eta-(5-methyl-6-(5-methyl-6-oxo- 1 ,6-dhydropyridin-i- yl)pyridin-2-yl)cyclopropanecarboxamide; To a solution of l-(4-chlorophenyl)cyclopropanecarboxylic acid (39.3 mg, 0.2 mmol) in dichloromethane (2 mL) was added thionyl chloride (43.8 muL, 0.6 mmol) followed by DMF (1 drop) and the reaction was stirred at room temperature for 30 minutes and then the solvent was removed. Toluene (~ ImL) was added, mixed with the residue and then removed by evaporation. The residue was then dissolved in dichloromethane (1 mL) and a solution of 6'- methoxy-3,5'-dimethyl-2,3'-bipyridin-6-amine (46mg, 0.2 mmol) and triethyl amine (83.6 muL, 0.60 mmol) in dichloromethane (1 mL) was added. The reaction was stirred at room temperature for 12 hurs. The reaction was then concentrated. The residue was dissolved in DMSO and purified by reverse phase HPLC (10-99percent acetonitrile/water) to yield 62mg of the product. ESI-MS m/z calc. 407.1, found 408.2 (M+l)+. Retention time 2.07 minutes. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
72% | With triethylamine; HATU; In DCM; at 20℃; for 4h; | Step A: Synthesis of 1-(4-Chlorophenyl)-N (cis-4-[4-(dimethylamino)-6-methylpyrimidin-2-yl]amino}cyclohexyl)cyclopropanecarboxamide trifluoroacetate. To a solution of cis-4-(4-dimethylamino-6-methyl-pyrimidin-2-ylamino)-1-aminocyclohexane (36 mg, 0.14 mmol), 1-(4-chlorophenyl)-cyclopropanecarboxylic acid (31 mg, 1 eq.) in DCM (2 mL) was added HATU (60 mg, 1.1 eq.) and followed by Et3N (40 muL, 2 eq.). The reaction was stirred at room temperature for 4 h, and completion of the reaction was confirmed by ESI MS. After removal of the volatile solvent, the residue was purified by prep-HPLC to give 45 mg (72 percent) of 1-(4-Chlorophenyl)-N-(cis-4-[4-(dimethylamino)-6-methylpyrimidin-2-yl]amino}cyclohexyl)cyclopropane carboxamide trifluoroacetate as a white solid. ESI MS m/e 428 M + H+; 1H NMR (400 MHz, CDCl3) delta 13.4 (bs, 1 H), 8.61 (d, 1 H, J = 7.2 Hz), 7.32 (m, 4 H), 5.70 (s, 1 H), 5.46 (d, 1 H, J = 8.0 Hz), 4.04 (bs, 1 H), 3.79 (m, 1 H), 3.21 (s, 3 H), 3.10 (s, 3 H), 2.31 (s, 3 H), 1.68~1.47 (m, 9 H), 1.22 (m, 1 H), 1.00 (m, 2H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; N-ethyl-N,N-diisopropylamine; In DMF (N,N-dimethyl-formamide); at 20℃; | To a solution of 1- (4-chlorophenyl)cyclopropanecarboxylic (50 mg, 0.25 mmol), (3S)- pyrrolidin-3-ol (24.4 mg, 0.28 mmol) and BOP ( 116.0 mg, 0.26 mmol) in 0.4 mL DMF was added hunig base (0.066 ml, 0.38 mmol). The mixture was stirred at room temperature overnight and directly purified by prep. HPLC to provide (3S)-1-((1-(4- chlorophenyl) cyclopropyl)carbonyl)pyrrolidin-3-ol (20 mg). LCMS: m/z 266.0 (M+H)+; 553.1 (2M+Na)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
To a solution of 1- (4-chlorophenyl)cyclopropanecarboxylic (40.0 mg, 0.000203 mol) in N, N-dimethylformamide (0.5 mL, 0.006 mol) at 0 Celsius were added spiro[1,2-benzisothiazole-3,3'- pyrrolidine] 1,1-dioxide (45.6 mg, 0.000203 mol) and benzotriazol-1- yloxytris (dimethylamino)phosphonium hexafluorophosphate (99.0 mg, 0.000224 mol). The reaction mixture was stirred for 3 minutes, then N, N-Diisopropylethylamine (88.6 muL, 0.000508 mol) was added. The solution was then stirred at r. t. overnight. The crude material was purified by prep-HPLC to give the desired compound. MS (ESI) : 404.0 (M + H+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; In DMF (N,N-dimethyl-formamide); at 20℃;pH ~ 9; | Step 2. 1-(4-Chlorophenyl)-N-cyclohexyl-N-cyclopropylcyclopropanecarboxamide To a solution of 1-(4-chlorophenyl)cyclopropanecarboxylic acid (20 mg) and N-cyclopropylcyclohexanamine (17 mg) in 0.3 mL DMF was added 49.5 mg BOP coupling reagent. The pH of the reaction mixture was adjusted to about 9, and the resulting solution was stirred at room temperature for overnight. The reaction mixture was directly purified by HPLC to afford the desired product. LCMS: (M+H)+=318.1/320.1. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; N-ethyl-N,N-diisopropylamine; In dichloromethane; at 20℃; for 2h; | To a solution of 30 mg of 1-(4-chlorophenyl)cyclopropanecarboxylic acid and 81 mg BOP reagent in 0.5 mL methylene chloride wad added 27 mg of 2-phenylpyrrolidine, followed by the addition of 53 ul of Hunig base. The reaction mixture was stirred at r. t. for 2 hours and directly purified by flash column using ethyl/hexane as the eluting solvent to provide the desired 1-[1-(4- chlorophenyl)cyclopropyl]carbonyl}-2-phenylpyrrolidine. LCMS (ESI) : 326.1 (M+H+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
34% | 500 mg (2.54 mmol) 1-(4-chlorophenyl)-cyclopropane-carboxylic acid, 1.20 ml (5.38 mmol) phosphoric acid diphenylesterazide and 0.39 ml (2.80 mmol) triethylamine are placed in 10 ml of dimethylformamide, then stirred for 16 hours at ambient temperature. Then the reaction mixture is added dropwise at 100° C. within 2 hours to 50 ml of water and 10 ml of 1 N hydrochloric acid, cooled and neutralised with sodium hydroxide solution. The precipitate formed is suction filtered, the filtrate is extracted with ethyl acetate. The organic phase is dried and evaporated to dryness. The residue is extracted acidically, the aqueous phase is neutralised and extracted with dichloromethane. The resulting organic phase is dried and evaporated to dryness. Yield: 145 mg (=34percent of theoretical) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium hydroxide; In dichloromethane; | EXAMPLE 21 Synthesis of 1-[1-(4-Chloro-phenyl)-cyclopropanecarbonyl]-piperidine-3-carboxylic acid ethyl ester A solution of piperidine-3-carboxylic acid ethyl ester (10.0 g, 0.032 mol), 1-(4-chloro-phenyl)-cyclopropylcarboxylic acid (9.57 g, 0.049 mol), diisopropylethyl amine (21.0 g, 0.16 mol) in dichloromethane (160 mL) was stirred at room temperature. PyBroP (22.6 g, 0.49 mol) was added and the reaction mixture continued stirring at room temperature. After 12 h the reaction mixture was quenched with 10% KOH. The aqueous layer was extracted with ethyl acetate. The combined organic layers were dried over sodium sulfate and concentrated to yield a crude oil. The crude material was purified using silica gel chromatography (80:20 hexane:ethyl acetate) to yield the amide (18.0 g). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
60% | (9a) In a procedure analogous to that described for reaction (1c), 1-(4-chlorophenyl)-1-cyclopropane carboxylic acid (150 mg, 0.763 mmol) was reacted with the amine (312 mg, 1.2 eq) from reaction (5b). Silica gel column chromatography (ethyl acetate-hexane, 30:70 then 40:60) yielded the desired product (188.8 mg, 60percent). MS found: (M-H)-=413. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; In 1,4-dioxane; | (2) In a mixed solvent consisting of 14 ml of dioxane and 29 ml of a 1N aqueous sodium hydroxide solution was suspended 1.4 g of 1-(4-chlorophenyl)cyclopropanecarboxamide [this compound can be obtained from 1-(4-chlorophenyl)cyclopropanecarboxylic acid produced according to the method described in Chem. Ber., 119, 3694 (1986)]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
96% | With lithium aluminium tetrahydride; In tetrahydrofuran; at 0 - 20℃; for 2h;Inert atmosphere; | This acid (1.97 g, 10 mmol) was added to a stirred suspension of LiAlH 4 (0.61 g, 16 mmol) in THF(48 mL) at 0 - 5 C under an Ar atmosphere. The suspension was allowed to warm up to roomtemperature, followed by being stirred at the same temperature for 2 h. The mixture was quenchedwith water, and the resultant suspension was filtered through Celite (No.503), using a glass filter,washing with hexane. The obtained mixture was extracted twice with AcOEt and the combinedorganic phase was washed with water, brine, dried (Na 2SO4) and concentrated. The obtained crudecrystal was purified by SiO2-column chromatography (hexane/AcOEt = 3:1) to give the desiredproduct 12 (1.75 g, 96%).Pale yellow crystals; mp 53 - 54 C; |
In tetrahydrofuran; nitrogen; | REFERENCE EXAMPLE 2 Synthesis of 1-(4-chlorophenyl)cyclopropyl-1-carbinol 668 Milligrams (17.6 mmole) of lithium aluminum hydride was suspended in 60 ml of tetrahydrofuran in a nitrogen stream, and to the resulting suspension was added dropwise a solution of 3.46 g (17.6 mmole) of 1-(4-chlorophenyl)cyclopropanecarboxylic acid in 30 ml of tetrahydrofuran with stirring and with ice-cooling. After completion of the dropwise addition, the reaction mixture was stirred at room temperature for 2 hours. Thereafter, the reaction solution was carefully poured into a large quantity of ice/conc. hydrochloric acid mixture with stirring, and extracted with diethyl ether several times. The ether layer was dried over anhydrous magnesium sulfate, and the solvent was removed by evaporation to obtain 2.98 g of 1-(4-chlorophenyl)cyclopropyl-1-carbinol as a pale yellow liquid. 1 H-NMR spectrum (CDCl3, TMS). delta 7.28 (4H, s), delta 3.63 (2H, s), delta 1.50 (1H, broad s), delta 0.83 (4H, s). | |
With borane-THF; In tetrahydrofuran; at 0℃; for 1h; | A solution of borane in tetrahydrofuran (1.0 M, 60 ml, 60 mmol) was added to a solution of 1-(4-chlorophenyl)cyclopropanecarboxylic acid (7.95 g, 40.4 mmol) in tetrahydrofuran (50 mL) at 0 C., and the resulting solution was stirred at 0 C. for 1 h. The solvent was evaporated under reduced pressure. The residue was co-evaporated (azeotroped) with methanol (3×10 mL) to afford [1-(4-chlorophenyl)cyclopropyl]methanol (6.7 g, 0.037 mol). |
8 g | With dimethylsulfide borane complex; In tetrahydrofuran; at 0 - 20℃;Inert atmosphere; | To a stirred solution of l-(4-chlorophenyl)cyclopropane-l-carboxylic acid (Intermediate 8, 10 g, 51.02 mmol, 1.0 eq) in THF (150 ml) at 0 C under nitrogen was added boranedimethyl sulphide (51 ml, 102.04 mmol, 2.0 eq, 2.0 M in THF). The reaction mixture was allowed to stir at room temperature for overnight. TLC indicated starting material was consumed and the desired product was observed. The reaction mixture was cooled to 0 C, quenched with saturated aqueous ammonium chloride solution (50 ml) then diluted with water (100 ml) and extracted with EtOAc (3x200 ml). The combined organic extracts were washed with water (100 ml), brine solution (50 ml), dried over Na2S04, filtered and evaporated under reduced pressure to obtain the desired product (8.0 g) as colourless oil. 1H NMR (300 MHz, CDC13): delta ppm 7.36-7.27 (m, 4H), 3.65 (s, 2H), 0.86 (m, 4H). |
8 g | With borane-dimethyl sulfide complex; In tetrahydrofuran; at 0 - 20℃;Inert atmosphere; | To a stirred solution of 1 -(4-chlorophenyl)cyclopropane- 1 -carboxylic acid (Example 4-step 2, 10 g, 51.02 mmol, 1.0 eq) in THF (150 ml) at 0 C under nitrogen was added borane dimethyl sulfide (51 ml, 102.04 mmol, 2.0 eq, 2.OM in THF). The reaction mixture was allowed to stir at room temperature for overnight. TLC indicated starting material wasconsumed and the desired product was observed. The reaction mixture was cooled to 0 C, quenched with saturated ammonium chloride solution (50 ml), diluted with water (100 ml) and extracted with EtOAc (3x200 ml). The combined organic extracts were washed with water (100 ml) and brine solution (50 ml). The organic layer was dried over Na2SO4, filtered and evaporated under reduced pressure to obtain the desired product (8.0 g) as colourless oil.?H NMR (300 MHz, CDC13): ppm 7.36-7.27 (m, 4H), 3.65 (s, 2H), 0.86 (m, 4H). |
Yield | Reaction Conditions | Operation in experiment |
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Example 30 1-(4-Chlorophenyl)-N-[4-(3,4-dichlorobenzyl)morpholin-2-yl]methyl}cyclopropanecarboxamide Trifluoroacetate Example 30 was prepared in an analogous manner to Example 1 using a mixture of Intermediate 1 (0.055 g) and 1-(4-chlorophenyl)cyclopropanecarboxylic acid (0.039 g) to give the title compound (0.008 g). LC-MS (System A): Rt 3.03 mins, Mass Spectrum m/z 455 [MH+]. |
Yield | Reaction Conditions | Operation in experiment |
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EXAMPLE 44 1-(4-CHLOROPHENYL)-N-(3-{4-[3-(ISOBUTYRYLAMINO)PHENYL]-1-PIPERIDINYL}PROPYL)CYCLOPROPANECARBOXAMIDE: Example 44 was prepared from 1-(4-chlorophenyl)cyclopropanecarboxylic acid and N-{3-[1-(3-aminopropyl)-4-piperidinyl]phenyl}-2-methylpropanamide according to the procedures described in Scheme 9: 1H NMR (400 MHz, CDCl3) delta 7.47 (s, 1H), 7.40 (s,1H), 7.36-7.30 (m, 5H), 7.27-7.20 (m, 1H), 6.93 (d, 1H, J=7.6 Hz), 5.70-5.63 (m, 1H), 3.24 (q, 2H, J=6.6 Hz), 2.84 (d, 2H, J=11.4 Hz), 2.52 (quintet, 1H, J=7.2 Hz), 2.47-2.37 (m,1H), 2.26 (t, 2H, J=7.2 Hz), 1.92 (t, 2H, J=11.6 Hz,), 1.75 (d, 2H, J=12.5 Hz), 1.65-1.53 (m, 6H), 1.25 (d, 6H, J=7.2 Hz), 1.00 (q, 2H, J=2.9 Hz); ESMS m/e: 482.3 (M+H)+; Anal. Calc. for C28H36ClN3O2.0.540 CH2Cl3: C, 64.93; H, 7.08; N, 7.96. Found: C, 65.00; H, 7.22; N, 7.81. |
Yield | Reaction Conditions | Operation in experiment |
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EXAMPLE 89 1-(4-CHLOROPHENYL)-N-(3-{4-[5-(ISOBUTYRYLAMINO)-2-METHYLPHENYL]-1-PIPERIDINYL}PROPYL)CYCLOPROPANECARBOXAMIDE: Example 89 was prepared from 1-(4-chlorophenyl)cyclopropanecarboxylic acid and N-{3-[1-(3-aminopropyl)-4-piperidinyl]-4-methylphenyl}-2-methylpropanamide according to the procedures described in Scheme 10: 1H NMR (400 MHz, CDCl3) delta 7.40-7.32 (m, 7H), 7.08 (d, 1H, J=8.4 Hz), 5.70 (br s, 1H), 3.27 (dd, 2H, J=6.4, 12.4 Hz), 2.88 (d, 2H, J=11.6 Hz), 2.64 (m, 1H), 2.53 (m, 1H), 2.31 (t, 2H, J=6.8 Hz), 2.28 (s, 3H), 1.99 (dt, 2H, J=2.8, 11.2 Hz), 1.67-1.60 (m, 8H), 1.27 (d, 6H, J=6.8 Hz), 1.03 (dd, 2H, J=4.0, 6.8 Hz); ESMS m/e: 496.3 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
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EXAMPLE 69 N-(3-{4-[3-(butyrylamino)phenyl]-1-piperidinyl}propyl)-1-(4-chlorophenyl)cyclopropanecarboxamide: Example 69 was prepared from 1-(4-chlorophenyl)cyclopropanecarboxylic acid and N{3-[1-(3-amino propyl)-4-piperidinyl]phenyl}butanamide according to the procedures described in Scheme 10: 1H NMR (400 MHz, CDCl3) delta 7.53 (s, 1H), 7.45 (s, 1H), 7.36-7.34 (m, 5H), 7.24 (t, 1H, J=8.0 Hz), 6.94 (d, 1H, J=7.6 Hz), 5.69 (br s, 1H), 3.25 (dd, 2H, J=6.8, 12.8 Hz), 2.87 (d, 2H, J=11.6 Hz), 2.44 (m, 1H), 2.35 (t, 2H, J=7.2 Hz), 2.29 (t, 2H, J=6.8 Hz), 1.95 (t, 2H, J=11.2 Hz), 1.80-1.74 (m, 4H), 1.63-1.59 (m, 6H), 1.03-1.00 (m, 5H); ESMS m/e: 482.3 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
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EXAMPLE 76 1-(4-CHLOROPHENYL)-N-(3-{4-[6-(ISOBUTYRYLAMINO)-2-PYRIDINYL]-1-PIPERIDINYL}PROPYL)CYCLOPROPANECARBOXAMIDE: Example 76 was prepared from 1-(4-chlorophenyl)cyclopropanecarboxylic acid and N-{6-[1-(3-aminopropyl)-4-piperidinyl]-2-pyridinyl}-2-methylpropanamide according to the procedures described in Scheme 10: 1H NMR (400 MHz, CDCl3) delta 8.06 (d, 1H, J=8.0 Hz), 7.83 (s, 1H), 7.64 (t, 1H, J=7.6 Hz), 7.38-7.33 (m, 4H), 6.89 (d, 1H, J=7.6 Hz), 5.68 (br s, 1H), 3.26 (dd, 2H, J=6.0, 12.4 Hz), 2.90 (d, 2H, J=11.6 Hz), 2.58-2.52 (m, 2H), 2.31 (t, 2H, J=6.8 Hz), 1.99 (t, 2H, J=12.0 Hz), 1.85 (d, 2H, J=12.8 Hz), 1.70-1.59 (m, 6H), 1.28 (d, 6H, J=6.8 Hz), 1.01 (dd, 2H, J=3.6, 6.4 Hz); ESMS m/e: 483.3 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
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EXAMPLE 47 1-(4-CHLOROPHENYL)-N-(3-{4-[4-FLUORO-3-(ISOBUTYRYLAMINO)PHENYL]-1-PIPERIDINYL}PROPYL)CYCLOPROPANECARBOXAMIDE: Example 47 was prepared from 1-(4-chlorophenyl)cyclopropanecarboxylic acid and N-{5-[1-(3-aminopropyl)-4-piperidinyl]-2-fluorophenyl}-2-methylpropanamide according to the procedures described in Scheme 9: 1H NMR (400 MHz, CDCl3) delta 8.32-8.18 (m, 1H), 7.43-7.25 (m, 5H), 7.08-6.93 (m, 1H), 6.93-6.79 (br, 1H), 5.74-5.59 (br, 1H), 3.35-3.15 (m, 2H), 3.93-2.75 (m, 2H), 2.65-2.49 (m, 1H), 2.49-2.34 (m, 1H), 2.34-2.19 (m, 2H), 2.00-1.83 (m, 2H), 1.82-1.68 (m, 2H), 1.68-1.48 (m, 4H), 1.36-1.17 (m, 2H), 1.27 (d, 6H, J=6.8 Hz), 1.0 (s, 2H); ESMS m/e: 500.3 (M+H)+; Anal. Calc. for (HCl salt) C28H36Cl2FN3O2.0.45CHCl3: C, 57.85; H, 6.22; N, 7.11. Found: C, 57.61; H, 6.37; N, 7.30. |
Yield | Reaction Conditions | Operation in experiment |
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EXAMPLE 63 1-(4-CHLOROPHENYL)-N-(3-{4-[3-(PROPIONYLAMINO)PHENYL]-1-PIPERIDINYL}PROPYL)CYCLOPROPANECARBOXAMIDE: Example 63 was prepared from 1-(4-chlorophenyl)cyclopropanecarboxylic acid and N-{3-[1-(3-aminopropyl)-4-piperidinyl]phenyl}propanamide according to the procedures described in Scheme 10: ESMS m/e: 468.3 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
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EXAMPLE 118 1-(4-CHLOROPHENYL)-N-[3-(4-{3-[(CYCLOPROPYLCARBONYL)AMINO]PHENYL}-1-PIPERIDINYL)PROPYL]CYCLOPROPANECARBOXAMIDE: Example 118 was prepared from 1-(4-chlorophenyl)cyclopropanecarboxylic acid and N-{3-[1-(3-aminopropyl)-4-piperidinyl]phenyl}cyclopropanecarboxamide according to the procedures described in Scheme 10: 1H NMR (400 MHz, CDCl3) delta 8.12-7.88 (br, 1H), 7.48-7.14 (m, 7H), 6.85 (d, 1H, J=7.2 Hz), 5.83-5.66 (br, 1H), 3.29-3.09 (m, 4H), 2.66-2.53 (m, 2H), 2.53-2.40 (m, 1H), 2.37-2.17 (m, 2H), 1.95-1.53 (m, 7H), 1.14-0.91 (m, 6H), 0.89-0.71 (m, 2H); ESMS m/e: 480.2 (M+H)+; Anal. Calc. (HCl salt) C28H35Cl2N3O2.0.38CHCl3: C, 60.64; H, 6.34; N, 7.47. Found: C, 60.38; H, 6.57; N, 7.80. |
Yield | Reaction Conditions | Operation in experiment |
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83% | In a 1 L round-bottom flask, 1-(4-chlorophenyl)cyclopropanecarboxylic acid (20 g, 0.10 mol) was taken up in 175 mL of toluene. Thionyl chloride (75 mL, 122 g, 1.0 mol) was added and the solution was heated at reflux temperature overnight under nitrogen. After cooling, toluene and excess thionyl chloride were removed by evaporation and azeotroping with three additional 100 mL-portions of toluene. The acid chloride was heated overnight at 100° C. with tris(trimethylsiloxy)ethylene (67 mL, 59 g, 0.20 mol) under nitrogen. The reaction mixture was subsequently cooled to 50° C. and diluted with 100 mL of 1,4-dioxane and 20 mL of 1 M hydrochloric acid. The resulting mixture was heated at 80° C. for 2 hours. The organic solvents were removed under reduced pressure and the remaining mixture was diluted with 150 mL of water and extracted with three portions of diethyl ether. The combined organic layers were washed with two portions of 5percent sodium carbonate solution, dried over anhydrous magnesium sulfate, filtered, and concentrated to give a yellow oil (intermediate 78, 17.9 g, 83percent yield). This could be further purified by flash chromatography over silica gel (6-50percent ethyl acetate in hexanes). 1H NMR (400 MHz, CDCl3) delta 1.28 (q, J=4.0 Hz, 2H), 1.74 (q, J=3.5 Hz, 2H), 3.16 (t, J=4.7 Hz, 1H), 4.05 (d, J=4.8 Hz, 2H), 7.29-7.32 (m, 2H), 7.33-7.37 (m, 2H). |
Yield | Reaction Conditions | Operation in experiment |
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Example 30 1-[1-(4-Chloro-phenyl)-cyclopropyl]-4-isopropyl-1,3-dihydro-imidazol-2-one Step A]: 2-{3-[1-(4-Chloro-phenyl)-cyclopropyl]-ureido}-3-methyl-butyric acid methyl ester; To a suspension of 1-(4-Chlorophenyl)-1-cyclopropane carboxylic acid (400 mg) in benzene (8 mL) was added triethylamine (0.23 mL) and diphenylphosphoryl azide (0.44 mL) over 5 minutes under argon. The mixture was the allowed to stir at 90° C. for 2 hours. D,L-valine methyl ester hydrochloride was added in one portion and stirring was continued at 90° C. for 20 hours. The mixture was cooled and added to ethyl acetate and 1 M NaOH. The layers were separated and the organic phase was washed with brine, dried over Na2SO4 and evaporated. The residue was purified by flash chromatography using methanol/ethyl acetate 9:1 as an eluent. Fractions containing the desired material were combined and evaporated to give 2-{3-[1-(4-chloro-phenyl)-cyclopropyl]-ureido}-3-methyl-butyric acid methyl ester as colorless solid (500 mg). MS (ESI): 325.2 (MH+). |
Yield | Reaction Conditions | Operation in experiment |
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97% | [00145] To a solution of l-(4-chlorophenyl)cyclopropanecarboxylic acid (6300 mg, 32.0 mmol) and 4-methylmorpholine (3.87 mL, 35.2 mmol) in THF (100 mL) at 0 0C was added isobutyl chloroformate (4.21 mL, 32.0 mmol). After completion of addition, the reaction mixture was stirred for 25 min, and then a solution of 2-chloro- 3-hydrazinylpyrazine (5095 mg, 35.2 mmol) in THF (60 mL) was added. The resulting mixture was stirred for 45 min. After that time, the reaction mixture was quenched with saturated aq. NaHCpsi3 and then extracted with EtOAc (25 mL). The organic layer was collected, washed with saturated aq. NH4Cl followed by aq. NaCL, <n="81"/>dried over Na2SO4 and then concentrated by rotary evaporation to yield compound 35A (10 g, 97 percent yield) as a yellow solid. The crude product was utilized in the next step without further purification. LC/MS (m/z) = 323.1 [M+ 1] +. | |
61% | [00125] To a 0 0C solution of l-(4-chlorophenyl)cyclopropanecarboxylic acid (0.77 g, 3.92 mmol) in THF (15 mL) was added 4-methylmorpholine (0.43 g, 4.3 mmol). The resulting mixture was stirred for 5 minutes, and then isobutyl chloroformate (0.56 g, 4.14 mmol) was added dropwise over 5 minutes. The resulting mixture was stirred for Ih, and then a solution of compound IA (0.56g, 3.92 mmol) in THF/DMF/NMM (10 ml/2 ml/2 ml) was added. Upon completion of addition, the reaction mixture was warmed to room temperature where it stirred for 4 h. After this <n="68"/>time, brine (15 mL) and ethyl acetate (50 mL) were added. The organic phase was separated, dried over Na2SO4, and then concentrated in vacuo. The resulting residue was purified by flash chromatography (SiO2, 0-85percent ethyl acetate / hexanes) to afford compound 4A as a solid (0.78 g, 61percent). LC/MS (m/z) = 323 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
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93% | [00150] To a solution of l-(4-chlorophenyl)cyclopropanecarboxylic acid (2.00 g, 10.16 mmol) in 40 mL THF was added 4-methylmorpholine (1.68 mL, 15.23 mmol). Upon completion of addition, the solution temperature was lowered to 0 0C, and ethyl <n="84"/>chloroformate (1.10 g, 10.16 mmol) was added with stirring. Upon completion of addition, the mixture was stirred at 0 0C for 30 minutes, and then compound 36B (2.2O g, 10.16 mmol) was added. The reaction mixture was stirred at 0 0C for another hour. After this time, the reaction mixture was quenched with water (10 mL) and then extracted with ethyl acetate (60+3OmL). The combined organic extracts were dried over MgSO4 and concentrated by rotary evaporation to yield a residue. The residue was purified by column chromatography (0-50percent ethyl acetate / hexanes) to provide compound 36C (3.75 g, 93percent yield) as a yellow powder. LC/MS (m/z) = 395 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
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74% | [00123] To a 0 0C solution of l-(4-chlorophenyl)cyclopropanecarboxylic acid (98.3 mg, 0.50 mmol) in THF (2 mL) was added 4-methylmorpholine (60.5 muL, 0.55 mmol). Upon completion of addition, the mixture was stirred for 10 minutes, and then isobutyl chloroformate (67.4 muL, 0.52 mmol) was added dropwise over a 2 minute period. Upon completion of addition, the reaction mixture was stirred for 1 h. After this time, a solution of hydrazine 3B (75.1 mg, 0.50 mmol) in THF (3 mL) was added dropwise over a 2 minute period. The resulting mixture was stirred for 10 minutes and then the cooling bath was removed. The reaction mixture was warmed to room temperature over a 1 h period. After this time, water (5 mL) and ethyl acetate (10 mL) were added, and the resulting mixture was stirred for 10 minutes. At the conclusion of this period, the organic phase was separated, dried over Na2SO4, and then concentrated in vacuo. The resulting residue was purified by flash chromatography (SiO2, 0-60percent ethyl acetate / hexanes) to afford compound 3C as a pale-yellow solid (121 mg, 74percent). LC/MS (m/z) = 329 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
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23% | [00130] To a solution of l-(4-chlorophenyl)cyclopropanecarboxylic acid (1.97 g, 10 mmol) in 20 mL of THF was added NMM (1.11 g, 11 mmol). The resulting mixture was cooled to 0 0C and then isobutyl chloroformate (1.37 g, 10 mmol) was added. After 20 minutes at 0 0C, compound 28A (1.66 g, 10 mmol) was added to the resulting white suspension. Upon completion of addition, the reaction mixture was allowed to warm to rt and stirred overnight. EtOAc (300 mL) and water (100 mL) was added. The aqueous layer was removed and the EtOAc layer (which contained the desired product as a precipitate) was washed successively with 100 mL of saturated aqueous sodium bicarbonate, ammonium chloride, and brine. The EtOAc layer (containing a solid precipitate) was filtered and the solid was washed with EtOAc (2x5 mL) to provide compound 28B as a tan powder (805 mg, 23percent). LC/MS (m/z) = 345.8 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
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47% | [00133] To a solution of l-(4-chlorophenyl)cyclopropanecarboxylic acid (50 mg, 0.25 mmol) in 0.5 mL of THF was added NMM (28 mg, 0.28 mmol). The resulting <n="74"/>mixture was cooled to 0 0C and then isobutyl chloroformate (34 mg, 0.25 mmol) was added. After 10 minutes, compound 29A (50 mg, 0.25 mmol) was added to the resulting white suspension. Upon completion of addition, the reaction mixture was stirred for 110 minutes and then EtOAc (3 mL) was added. Upon completion of addition, the resulting mixture was washed successively with 3 mL of saturated aqueous ammonium chloride, sodium bicarbonate, and brine; dried over magnesium sulfate, filtered, and then concentrated to provide compound 29B as an off-white powder (44 mg, 47percent). LC/MS (m/z) = 378.7 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
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63% | A stirred solution of 1-(4-chlorophenyl)cyclopropanecarboxylic acid (8.71 g, 44.3 mmol) and NMM in THF (200 mL) was cooled 0° C. Once at the prescribed temperature, isobutyl chloroformate was added dropwise over 10 min, and the resulting white suspension was stirred for 1h. After this time, a solution of compound 1A (8.33g, 44.3 mmol) in THF (250 mL) was added over 10 min. Upon completion of addition, the reaction mixture was stirred for 15 min. At the conclusion of this period, the reaction mixture was warmed to RT, where it was stirred for 2 h. After this time, the reaction mixture was partitioned between ethyl acetate and water. The organic phase was separated, dried over Na2SO4, and then concentrated in vacuo to afford compound 1B (10.2 g, 27.8 mmol, 63percent yield) as an off-white solid. LC/MS (m/z)=366 (M+H)+. | |
A mixture of l-(4-chlorophenyl)cyclopropanecarboxylic acid (2.650 g, 13.48 mmol) and N-methylmorpholine (2.65 ml, 24.12 mmol) in 106 mL of THF was cooled to 0 °C. To this was added isobutyl chloroformate (2.212 ml, 16.85 mmol) dropwise over a period of 10 min. The mixture was allowed to stir at 0 °C for 1 h, and then a solution of 3-bromo-2-hydrazinylpyridine (3.17 g, 16.85 mmol) in 20 mL of THF was added. The reaction mixture was warmed to RT and stirred for 16 h. TLC analysis on silica gel using 5/95 ( v/v) MeOH/ CH2C12 and LC/MS analysis showed the reaction to be completed. The reaction was quenched with water. The organic layer was separated and the aqueous layer was extracted with EtOAc. The combined organic extracts were dried over anhydrous MgS04, filtered and concentrated in vacuo to give a light brown solid. This solid was triturated with 1/1 (v/v) ether/hexane (2 x 4 mL) to remove some of the light brown color. The solvents were decanted and the resulting solid was dried under vacuum to give 4.5 g (82percent yield) of a light yellow white solid. 1H-NMR (DMSO-d6, 400 MHz) delta 9.09 (d, J=2.0 Hz, 1H), 8.09 (dd, J=4.8, 1.5 Hz, 1H), 8.04 (d, J=2.0 Hz, 1H), 7.85 - 7.79 (m, 1H), 7.49 - 7.44 (m, 2H), 7.42 - 7.38 (m, 2H), 6.68 (dd, J=7.6, 4.7 Hz, 1H), 1.45 - 1.38 (m, 2H), 1.11 - 1.05 (m, 2H). LC/MS (ESI) 366.0/368.0/370.0 (M+1/M+3/M+5). The product was used with no further purification in the next step. |
Yield | Reaction Conditions | Operation in experiment |
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83% | To a slurry of 1-(4-chlorophenyl)cyclopropanecarboxylic acid (34.7 g; 177 mmoles; 1.1 equiv.) in toluene (142 mL) was added DMF (124 muL; 1.6 mmoles; 0.01 equiv.). Upon completion of addition, the slurry was stirred at 25° C. for 5 minutes and then neat oxalyl chloride (14.8 mL; 167 mmoles; 1.0 equiv.) was added at room temperature over a 20 min. period. The resulting slurry was stirred for 4 hr (the solids gradually dissolved as the reaction proceeded). In a separate flask, a mixture of compound 1E (35.5 g; 160 mmoles; 1.0 equiv.) and potassium carbonate (51 g; 369 mmoles; 2.3 equiv) in THF (355 mL) was cooled to 5° C. Once at the prescribed temperature, water (248 mL) was added and the biphasic mixture was stirred for 15 min. At the conclusion of this period, the acid chloride solution was transferred to the biphasic solution over a 20 minute period. Upon completion of the transfer, the reaction mixture was stirred for 30 min. The reaction mixture was analyzed by HPLC, which indicated that the reaction was complete. The aqueous layer was removed and the organic layer was washed with water (180 mL.x.2) and then concentrated via vacuum distillation at 60° C. to provide a rich product solution (178 mL). Toluene (70 mL) was added to the rich product solution and the resulting solution was heated to 70° C. Once at the prescribed temperature, n-heptane (425 mL) was added during a 30 min. period to generate a slurry. The slurry was cooled to 20° C. where it stirred for 3 hr. After this time, the slurry was filtered. The filter cake was washed with n-heptane (142 mL) and then dried in vacuo at RT for 48 hr to provide crude compound 1F (51 g, yield 92percent). Crude compound 1F was suspended in acetonitrile (770 mL) and water (35 mL), and the resulting mixture was heated to 75° C. where it stirred for 5 minutes in order to achieve full dissolution. The resulting solution was then cooled to 60° C. Once at the prescribed temperature, water (280 mL) was added during a 1 hour period. The resulting slurry was cooled to 20° C. during a 2 hr period. Once at the prescribed temperature, the slurry was stirred for two hours. The resulting solids were collected by filtration, washed with water (142 mL) and then dried in vacuo at 70° C. to afford recrystallized compound 1F (46 g, yield 83percent). HPLC purity 99.64percent.Compound 1F was also recrystallized by suspending crude compound 1F (17 g) in methanol (170 mL) and then heating the resulting slurry to reflux in order to achieve full dissolution. Upon dissolution, water (8.5 mL) was added and the resulting slurry was cooled to 20° C. Once at the prescribed temperature, the slurry was stirred for about 16 hours and then filtered. The filter cake was washed with water (68 mL) and then dried in vacuo at 70° C. to provide recrystallized compound 1F (14.1 g, yield 83percent, melting point 191° C.). IR (KBr) 3355, 3226, 2978, 1633, 1591, 1574, 1541, 1494, 1456, 1384, 1316, 1269, 1240, 1139, 1098, 978, 766, 534 cm-1. 1H NMR (400 MHz, DMSO-d6): delta1.07 (dd, J=6.9, 4.1 Hz, 2H), 1.44 (dd, J=6.8, 4.0 Hz, 2H,), 1.51 (s, 6H), 5.72 (s, 1H), 6.69 (dd, J=7.4, 4.9 Hz, 1H), 7.39 (dd, J=7.6, 1.5 Hz, 1H), 7.43 (dt, J=5.6, 2.3 Hz, 2H), 7.50 (dt, J=5.5, 2.3 Hz, 2H), 7.95 (dd, J=4.9, 1.6 Hz, 1H), 8.97 (d, J=3.2 Hz, 1H), 9.06 (dd, J=3.3 Hz, 1H). 13C NMR (100.6 MHz, DMSO-d6): delta14.6, 28.6, 28.8, 71.1, 114.4, 127.0, 128.4, 131.6, 131.8, 132.7, 138.7, 145.3, 155.3, 169.7. MS Compound 1F (M+1): m/e, 346.15. Anal. Calcd for Compound 1F: C, 62.52; H, 5.827; N, 12.15; Cl, 10.25. Found: C, 62.58; H, 5.78; N, 12.27, Cl, 10.26. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; In dichloromethane; for 18h; | A mixture of 8-(5-nitropyridin-2-yl)-8-azabicyclo[3.2.1]octan-3-endo-amine hydrochloride (0.98 g, 3.4 mmol), commercially available 1-(4-chlorophenyl)-1-cyclopropanecarboxylic acid (0.68 g, 3.5 mmol), EDCI (1.0 g, 5.3 mmol), HOBT (0.72 g, 5.3 mmol) and Et3N (2.5 mL, 18 mmol) in DCM (20 mL) was stirred 18 h. The resulting mixture was washed with satd NaHCO3 and brine successively, dried (MgSO4), filtered and evaporated to give 1-(4-chlorophenyl)-N-(8-(5-nitropyridin-2-yl)-8-azabicyclo[3.2.1]octan-3-endo-yl)cyclopropanecarboxamide (1.37 g, 95percent) as a yellow solid. 1H NMR (400 MHz, DMSO-d6): delta 9.03 (d, 1H), 8.18 (dd, 1H), 7.43 (AB q, 4H), 6.40 (d, 1H), 5.81 (d, 1H), 4.03 (m, 1H), 2.11 (m, 2H), 2.01 (m, 2H), 1.61 (m, 6H), 1.42 (m, 2H), 1.05 (m, 2H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In dichloromethane; at -10℃; | A solution of 1-(4-chlorophenyl)cyclopropanecarboxylic acid (5.Og, 25.3 mmol), 2-(4- methoxyphenyl)ethanamine (4.2 g, 28 mmol) and 4-N,N-Dimethylaminopyridin (3.3 g; 28 mmol) in methylenchloride (200 ml) was cooled to -100C. N-ethyl-N'-(3- Dimethylaminopropyl)-carbodiimid hydrochloride (EDC, 5.3 g, 28 mmol) was added in several portions and the resulting mixture stirred overnight. The reaction mixture was poured into water and consecutively extracted with water, 2N NaOH and 1 N HCI. Evapo- ration of the dried (NaSO4) extract yielded an oily residue that crystallized upon addition of n-heptan, which was used without further purification. Yield 7.0 g (21.2 mmol, 83percent). ESI-MS [M+H+] = 330 CaIc. for Ci9H20CINO2 = 329 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
EXAMPLE 2; Preparation of p-chlorophenycyclopropane carboxylic acid; The cyclopropanecarbonitrile (18 gm) obtained in example 1 was added to 20percent sulfuric acid (184 ml). The temperature of the reaction mass was slowly raised and maintained at reflux for 10-12 hours. After 12 hours, ethyl acetate was used to extract the product. The acid product from the organic layer was then extracted into 20percent NaOH solution. The aqueous layer was then acidified to pH 2-4 with concentrated HCl. The white solid product obtained was filtered and washed with water. The product p-chlorophenylcyclopropanecarboxylic acid was dried. The yield was 90-95percent and the product had a purity of 99.4percent by HPLC. The melting point was 152-155 ° C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; triethylamine; In dichloromethane; at 20℃; for 0.333333h; | Step 1 Preparation of 1-(4-chlorophenyl)cyclopropane carboaldehyde A solution of 1-(4-chlorophenyl)cyclopropane carboxylic acid (784 mg, 3.99 mmol) in dichloromethane (30 mL) was added sequentially at room temperature with N,O-dimethylhydroxylamine hydrochloride (389 mg, 3.99 mmol), benzotriazole-1-yloxytrispyrrolidinophosphonium hexafluorophosphate (2.28 g, 4.39 mmol) and triethylamine (807 mg, 7.97 mmol). The resultant was stirred at the same temperature for 20 min, and extracted with chloroform. The organic layer was dried over anhydrous sodium sulfate, and concentrated in vacuo. The obtained residue was dissolved in toluene (30 mL), added at -78° C. with a solution of diisobutylaluminum hydride in toluene (1.01 M, 4.35 mL), and the resultant was stirred at the same temperature for 1 hour. The reaction solution was added with hydrochloric acid, and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate, and concentrated in vacuo. The obtained residue was purified using column chromatography (hexane:ethyl acetate=3:1), and 1-(4-chlorophenyl)cyclopropane carboaldehyde (460 mg, 63.7percent) was obtained. 1H-NMR (400 MHz, CDCl3) delta; 1.38-1.40 (m, 2H), 1.53-1.59 (m, 2H), 7.23-7.26 (m, 2H), 7.30-7.35 (m, 2H), 9.16 (s, 1H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With diphenyl phosphoryl azide; triethylamine; at 80℃; for 18h; | 1-(4-Chlorophenyl)cyclopropanecarboxylic acid (590 mg, 3.0 mmol) was suspended in tBuOH (5 mL). This suspension was treated with NEt3 (834 muL, 6.0 mmol, 2 eq.) and diphenyl phosphoryl azide (DPPA, 647 muL, 3.0 mmol, 1 eq.) and stirred at 80° C. for 18 h. The solvent was removed in vacuo and the residue taken up in EtOAc and washed with aq. NaHCO3, 1M NaOH and brine. The EtOAc layer was concentrated. This residue was extracted with Et2O and then the Et2O extract absorbed onto silica and purified by column chromatography (1:1 EtOAc-petrol) to give the Boc-amine as an off-white solid. This material was dissolved in DCM (5 mL) and treated with TFA (5 mL). The mixture was stirred at room temperature for 2 h, then concentrated in vacuo. The residue was taken up in aq. NaHCO3 solution and extracted with EtOAc. The organic extracts were washed with 1M NaOH and brine, then dried (MgSO4), filtered and concentrated. The crude amine was used without further purification or analysis. | |
With diphenyl phosphoryl azide; triethylamine; In toluene; at 80℃; for 20h; | Example 14Synthesis of 1-(4-(9H-benzo[f]pyrido[2,3-b][1,2,4]triazolo[4,3-d][1,4]diazepin-3-yl)phenyl)cyclopropanamine hydrochlorideStep 1. Synthesis of tert-butyl (1-(4-chlorophenyl)cyclopropyl)carbamateA solution of 1-(4-chlorophenyl)cyclopropanecarboxylic acid (10.5 g, 53.3 mmol) in toluene (70 mL) was treated successively with triethylamine (15 mL, 106.6 mmol), diphenylphosphorylazide (DPPA) (12.7 mL, 58.6 mmol) and tert-butanol (25 mL, 267 mmol). The reaction mixture was stirred at 80° C. for 20 hours. The mixture was partitioned between ethyl acetate (300 mL) and water (100 mL). The phases were separated and the organic phase was washed with water (80 mL) then brine (100 mL). The organic phase was dried over sodium sulfate, filtered and concentrated in vacuo. The crude product was purified by flash chromatography (SiO2, 10percent ethyl acetate in hexanes). The tert-butyl (1-(4-chlorophenyl)cyclopropyl)carbamate was obtained as a white solid (14 g). LCMS [M+H]: 268. |
Tags: 72934-37-3 synthesis path| 72934-37-3 SDS| 72934-37-3 COA| 72934-37-3 purity| 72934-37-3 application| 72934-37-3 NMR| 72934-37-3 COA| 72934-37-3 structure
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