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CAS No. : | 2088-24-6 | MDL No. : | MFCD00014357 |
Formula : | C9H10O4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | AHDPQRIYMMZJTF-UHFFFAOYSA-N |
M.W : | 182.17 | Pubchem ID : | 74969 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P301+P312-P302+P352-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
* 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 |
---|---|---|
88% | With toluene-4-sulfonic acid at 20℃; | |
With hydrogenchloride | ||
With sulfuric acid In ethanol; water Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With phosphorus pentachloride; tin(IV) chloride; benzene |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With phosphorus pentachloride; phosphorus trichloride at 60℃; | ||
With phosphorus pentachloride; phosphorus trichloride | ||
With thionyl chloride for 5h; Heating; |
With oxalyl dichloride In dichloromethane for 3h; | 11 2-Amino-4-bromobenzonitrile was dissolved in 4: 1 AcOHZH2SO4 to form a suspension. The mixture was stirred for 4 h until it became clear and all starting material was consumed as monitored by LC-MS. The solution was poured into ice water and extracted by EtOAc three times. The combined organic layer was washed with brine and dried over Na2SO4. After filtration, the solvent was removed to provide 11-1. Substituted benzyloxy acetic acid (1.1 equiv) was treated with 2 M oxalyl chloride in DCM for 3 h and concentrated to give the corresponding acid chloride, which was then added to a stirred solution of 11-1 and pyridine (5 equiv) in DCM. The reaction mixture was stirred for 3 h until 11-1 was consumed as monitored by LC-MS. The precipitate was collected by filtration and was dried under vacuum to provide 11-2 as white solid. 11-2, potassium carbonate (4 equiv), boronic ester (1.5 equiv) and Pd(PPh3 )4( 10%) were dissolved in 4: 1 dioxane/water and sealed in a microwave tube. The reaction mixture was degassed and heated by microwave for 30min at 140 0C. The solvent was removed and the residue was subjected to preparative HPLC to provide product 11-3 as a TFA salt. | |
With dmap; thionyl chloride In dichloromethane for 2h; Reflux; | ||
With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane at 20℃; | 2-(3-Methoxyphenoxy)acetyl chloride (47b). 2-(3-Methoxyphenoxy)acetyl chloride (47b). A 500 ml_ flask fitted with a stir-bar, addition funnel, and an Ar inlet was charged with 3-methoxyphenoxyacetic acid (20.0 g, 1 10 mmol), CH2CI2 (120 ml_), and DMF (0.2 ml_). Oxalyl chloride (2M in CH2CI2, 69 ml_, 137 mmol) was added to the resultant solution over 45 min forming an orange solution. The mixture stirred overnight at rt. The solution was concentrated in vacuo to give 22.7 g of 47b as an orange oil (100%). HPLC analysis (15:10:75 H2O:A1 :MeOH) showed a purity of 93% with a retention time of 3.9 min. | |
With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane at 20℃; for 3h; | General synthetic procedure for compounds 8-11 and 13-36 General procedure: To a stirred suspension of various carboxylic acid 4a, 4b, 6a and 8a (1.0 equiv) in CH2Cl2 (25 mL) was added oxalyl chloride (3.0 equiv) and a catalytic amount of DMF. After stirring at room temperature for 3 h, the reaction was concentrated under reduced pressure to afford a yellow oil crude acyl chloride. To a solution of methyl 2-(4-amino-2-fluorophenoxy)acetate 3a (1.0 equiv) in CH2Cl2(25 mL) was added Et3N (1.5 equiv), and this mixture was cooled to -5 °C. Subsequently, the crude acyl chloride obtained above was added in dropwise at a rate to ensure that the temperature did not exceed 0 °C. The solution was stirred for another 2 hrs at 25 °C, then washed successively with 10% HCl (2 × 25 mL), 10% NaHCO3 (2 × 25 mL) and brine (2 × 20 mL). The organic layer was dried over anhydrous sodium sulfate, filtered and the solvent was then evaporated to give the impure amide which was recrystallized from ethanol to give the desired products as colorless crystals. To a solution of the obtained crystals (1.0 equiv)in 2:3:1 THF/MeOH/H2O (18 ml) was added LiOH·H2O (1.5 equiv). After stirring at room temperature for 4 h, the volatiles were removed under reduced pressure. The residue was acidified with 1N hydrochloric acid solution, and then filtered and the filter cake was washed with 5 mL of water, dried in vacuum to afford a white powder. Recrystallization from 75% EtOH gave the desired compounds 8-11 and 13-36 as colorless crystals. | |
With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane at 20℃; for 12h; | ||
With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane at 0℃; for 3h; | 5.1.30. General procedures for the synthesis 28a-g General procedure: To a solution of the acid (22a-g) (1.2 eq.) in DCM, oxalyl chlorideand 1 drop DMF were added dropwise at 0 C. After 3 h, DCM wasremoved by rotary evaporation. The resulting acyl chloride dissolvedin THF and pyridine was added dropwise into a solution of26 (1.0 eq.) in THF at 0 C, then slowly warmed to r.t. and continuedstirring for 5e6 h. 1 M HCl was added and extracted with ethylacetate for three times. The organic layer was combined, washedwith brine for once, dried over anhydrous Na2SO4 and concentratedto afford compounds 27a-g. To the solution of 27a-g in ethyl acetate,HCl gaswas added for 0.5 h, and the resulting solidwas filteredto obtain desired compounds 28a-g. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With ammonia | ||
Multi-step reaction with 2 steps 1: HCl 2: aqueous NH3 / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With nitrosylsulfuric acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With nitric acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium hydroxide | ||
With sodium hydroxide; water In methanol | ||
With sodium hydroxide In 1,4-dioxane at 0 - 20℃; for 1h; | 5.1.19. General procedure for the synthesis of 22a-g General procedure: 1MNaOH was added dropwise to a solution of 21a-g in dioxaneat 0 C. After stirring at r.t. for 1 h, the dioxane was evaporated andthe residue was washed with ethyl acetate. Then the water layerwas acidified with 1M HCl to pH 3 and extracted with ethyl acetate.The combined organic layer was washed with brine (50 mL),dried over anhydrous Na2SO4, and concentrated or directly filteredthe solid to give 22a-g as a white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With water at 200 - 210℃; im Einschmelzrohr; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With water |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide | ||
With potassium hydroxide | ||
With sodium hydroxide Heating; |
Stage #1: O-methylresorcine With sodium hydroxide In water Stage #2: chloroacetic acid In water at 40 - 85℃; for 2h; Stage #3: With hydrogenchloride In water at 20℃; | 4.5.1. Phenoxyacetic acids (7) General procedure: An appropriately substituted phenol (50 mmol) was added to a solution of NaOH (187.5 mmol) in 15 mL of H2O. Chloroacetic acid (85 mmol) was added slowly at to the resulting solution at 40 °C and the reaction mixture was heated to 85 °C. Stirring was continued for 2 h, the reaction was cooled to room temperature and 100 mL H2O was added. The reaction was filtered and the filtrate was acidified with concentrated HCl to pH 1-2. The brown oil fraction which formed was extracted to diethylether (2 × 50 ml). The ether fraction, in turn, was extracted with an aqueous solution of 5% Na2CO3 (2 × 37.5 ml). The combined Na2CO3 fractions were acidified to pH 1-2 with concentrated HCl and the resulting precipitate was collected by filtration and oven dried to obtain the required acids.24 | |
With sodium hydroxide Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
(i) K2CO3, acetone, (ii) (hydrolysis); Multistep reaction; | ||
Stage #1: O-methylresorcine; ethyl bromoacetate With potassium carbonate In acetonitrile at 80℃; for 4h; Stage #2: With water; sodium hydroxide In ethanol at 50℃; for 4h; | 20.1 Step 1: 2-(3-methoxyphenoxy)acetic acid To a stirred mixture of 3-methoxyphenol (200 mg, 1.61mmol) in MeCN (5 mL) was added ethyl bromoacetate (402mg, 2.42mmol) and K2C03 (672mg, 4.83mmol). The mixture was stirred at 80 °C for 4 hours, filtered and the filtrate concentrated. NaOH (129mg, 3.22mmol) and H20/EtOH (1: 1, 10 mL) was added to the mixture. The reaction mixture was stirred at 50 °C for 4 hours then acidified by 1M HC1 and then extracted with ethyl acetate (2x30 mL). The combined organic extracts were washed with brine (30 mL), dried over anhydrous Na2S04 and concentrated with the residue used directly for the next step. LCMS (m/z): 183.0 (M+l). | |
Stage #1: O-methylresorcine; ethyl bromoacetate With potassium carbonate In acetonitrile at 80℃; for 4h; Stage #2: With water; sodium hydroxide In ethanol at 50℃; for 4h; | 20.1 Step 1: 111 2-(3-methoxyphenoxy)acetic Acid To a stirred mixture of 112 3-methoxyphenol (200 mg, 1.61 mmol) in 40 MeCN (5 mL) was added 41 ethyl bromoacetate (402 mg, 2.42 mmol) and 19 K2CO3 (672 mg, 4.83 mmol). The mixture was stirred at 80° C. for 4 hours, filtered and the filtrate concentrated. 42 NaOH (129 mg, 3.22 mmol) and 43 H2O/8 EtOH (1:1, 10 mL) was added to the mixture. The reaction mixture was stirred at 50° C. for 4 hours then acidified by 1M HCl and then extracted with ethyl acetate (2×30 mL). The combined organic extracts were washed with brine (30 mL), dried over anhydrous Na2SO4 and concentrated with the residue used directly for the next step. LCMS (m/z): 183.0 (M+1). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With aluminium trichloride In carbon disulfide |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With toluene-4-sulfonic acid at 25℃; for 2h; | |
92% | With toluene-4-sulfonic acid at 20℃; | |
With hydrogen cation at 30℃; |
With toluene-4-sulfonic acid at 25℃; for 3h; | ||
With thionyl chloride at 0 - 20℃; for 3h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With iron(III) sulfate; water In toluene at 110℃; for 2h; Ionic liquid; | |
80% | With barium dihydroxide In methanol at 80℃; for 2h; | |
With Alkaline; water at 15℃; ΔH(excit.), ΔS(excit.), velocity const., EA; also at 10 and 20 deg C; |
With water; lithium hydroxide In methanol at 20℃; | ||
With lithium hydroxide monohydrate In methanol; water for 2h; Reflux; | General Procedure for Synthesis of Substituted acetamides (4a-4hh, 4' and 4'') General procedure: To a stirred solution of methyl ester (2a-i, 1 mmol) in MeOH-H2O (3 : 1, 4 mL) was added LiOH•H2O (2 mmol), and the resulting mixture was refluxed for 2 h. After cooling, the solvent was removed under reduced pressure, the residue was acidified with 10% HCl aq. The aqueous mixture was extracted with EtOAc (5 mL x 6), and the organic extracts were combined, dried over Na2SO4, and evaporated to give the carboxylic acid. To a stirred solution of amide (3a-n, 3' and 3'', 1 mmol) in CH2Cl2 (5 mL) was added TFA (8 mmol), and the reaction mixture was stirred at room temperature for 24 h. The reaction was quenched with satd. NaHCO2 aq., and the organic layer was separated. The aqueous layer was extracted with CH2Cl2 (5 mL x 10), and the organic layer and extracts were combined, dried over K2CO3, and evaporated to give the amine. To a stirred solution of the carboxylic acid prepared above in CH2Cl2 (5 mL) was added CDI (1 mmol), and the reaction mixture was stirred at room temperature for 1 h. To the mixture was added a solution of the amine prepared above in CH2Cl2 (2 mL), and the resulting solution was stirred at room temperature for 24 h. The solvent was removed under reduced pressure, and the residue was chromatographed on silica gel (15 g, hexane : acetone = 5 : 1 ~ 3 : 1) to give substituted acetamide. | |
With lithium hydroxide In methanol; water at 50℃; for 12h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In N,N-dimethyl-formamide at 30℃; other temp., ΔH(excit.), ΔS(excit.); |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With pyridinium hydrobromide perbromide; acetic acid at 19.9℃; ΔH(activ.), ΔS(activ.); var. temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80% | With sodium hydroxide In water at 60℃; for 7h; | |
80% | With sodium hydroxide In water at 20 - 60℃; | |
With sodium hydroxide In water at 60℃; for 8h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
82% | With bis-(2-oxo-3-oxazolidinyl)phosphoryl chloride; triethylamine In dichloromethane at 0 - 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In N,N-dimethyl-formamide |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: SOCl2 / 5 h / Heating 2: 40 percent / Et3N / CHCl3 / 12 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 82 percent / Et3N; bis(2-oxo-3-oxazolidinyl)phosphinic chloride / CH2Cl2 / 0 - 20 °C 2: 88 percent / aq. LiOH / tetrahydrofuran; methanol / 45 - 60 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 0.25 g / polyphosphoric acid / 0.67 h / Heating 2: 0.4 g / CHCl3 / 6 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 0.25 g / polyphosphoric acid / 0.67 h / Heating 2: 0.2 g / K2CO3 / dioxane / 8 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: phosphorus trichloride; phosphorus pentachloride / 60 °C 2: benzene |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: HCl 2: ethanol; hydrazine hydrate | ||
Multi-step reaction with 2 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: HCl |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: NH3 2: P2O5 / 110 °C 3: diethyl ether / bei Raumtemperatur und Behandeln der Reaktionsloesung mit Eis und wss. H2SO4 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: NH3 2: P2O5 / 110 °C 3: diethyl ether / bei Raumtemperatur und Behandeln der Reaktionsloesung mit Eis und wss. H2SO4 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: NH3 2: P2O5 / 110 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: NH3 2: P2O5 / 110 °C 3: diethyl ether / bei Raumtemperatur und Behandeln der Reaktionsloesung mit Eis und wss. H2SO4 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: alcoholic sodium ethylate 2: methanolic KOH-solution | ||
Multi-step reaction with 2 steps 1: potassium carbonate / tetrahydrofuran / 20 - 80 °C 2: lithium hydroxide; water / methanol / 20 °C | ||
Multi-step reaction with 2 steps 1: potassium carbonate / N,N-dimethyl-formamide / 24 h / 80 °C 2: lithium hydroxide monohydrate / methanol; water / 2 h / Reflux |
Multi-step reaction with 2 steps 1: sodium hydroxide / water / 8 h / Reflux 2: hydrogenchloride / water / pH 1 | ||
Multi-step reaction with 2 steps 1: potassium carbonate / N,N-dimethyl-formamide / 70 °C 2: sodium hydroxide / 1,4-dioxane / 1 h / 0 - 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: phosphorus (V)-chloride; benzene; tin (IV)-chloride 2: acetic acid; benzene / 150 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: aluminium trichloride / carbon disulfide 2: sodium hydroxide / water |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: fuming nitric acid 2: aqueous HBr |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: fuming nitric acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 20h; | 19.A The reaction mixture of N-deacetylthiocolchicine (15 mg, 0.05 mmol), 3-methoxyphenoxyacetic acid (14 mg, 0.08 mmol), EDCI (25 mg, 0.13 mmol), DMAP (2 mg, 0.02 mmol) and dichloromethane (3 ml) was stirred at room temperature for 20 h. Then dichloromethane (20 ml) was added. Organic layer was washed with H2O, 5% Na2CO3 and brine, and then dried over MgSO4. After the solvent was removed under vaccum, the residue was separated by column chromatography (eluent: ethyl acetate and petroleum ether) to afford 16.0 mg N-Deacetyl-N-(3-methoxyphenoxyacetyl)thiocolchicine, mp 182-18) to afford 16.0 mg N-Deacetyl-N-(3-methoxyphenoxyacetyl)thiocolchicine, mp 182-184° C. [0507] The chemical structure analysis was performed by 1HNMR (CDCl3, 600 MHz): δ 7.29 (d, 1H, Ar-H), 7.24 (t, 1H, Ar-H), 7.18 (s, 1H, Ar-H), 7.08 (d, 1H, Ar-H), 7.05 (d, 1H, Ar-H), 6.65 (d, 1H, Ar-H), 6.54 (s, 1H, H4), 6.51 (d, 2H, NH and Ar-H), 4.75 (m, 1H, H7), 4.43 (q, 2H, COCH2O), 3.95 (s, 3H, OCH3), 3.91 (s, 3H, OCH3), 3.81 (s, 3H, OCH3), 3.68 (s, 3H, OCH3), 2.43 (s, 3H, SCH3), 2.60-1.80 (m, 4H, H5,6) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
25.7 g (76%) | In diethyl ether | 4 2-(3-Methoxyphenoxy)ethanol PREPARATION 4 2-(3-Methoxyphenoxy)ethanol This compound was prepared by the procedure of Preparation 2. Thus, 36.5 g (0.2 mole) of 3-methoxyphenoxyacetic acid (Lancaster Synthesis, Inc., Windham, N.H. 03087) and 7.7 g (0.2 mole) of lithium aluminum hydride (Aldrich) in 600 ml of ethyl ether gave 25.7 g (76%) of light-yellow oil. Analysis: Calculated for C9 H12 O3: C, 64.27; H, 7.19. Found: C, 63.93; N, 7.10. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
25.7 g (76%) | In diethyl ether | 4 Preparation 4 Preparation 4 2-(3-Methoxyphenoxy)ethanol. This compound was prepared by the procedure of Preparation 2. Thus, 36.5 g (0.2 mole) of 3-methoxyphenoxyacetic acid (Lancaster Synthesis, Inc., Windham, NH 03087) and 7.7 g (0.2 mole) of lithium aluminum hydride (Aldrich) in 600 ml of ethyl ether gave 25.7 g (76%) of light-yellow oil. Analysis: Calculated for C9 H12 O3: C, 64.27; H, 7.19; Found: C, 63.93; N, 7.10. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; triethylamine In N,N-dimethyl-formamide at 20℃; Cooling with ice; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98% | Stage #1: 3-methoxyphenoxyacetic acid With borane In tetrahydrofuran at 20 - 30℃; Stage #2: With methanol In tetrahydrofuran at 35℃; | R General Procedure R: Reduction of carboxylic acidA solution of carboxylic acid in an organic solvent (such as tetrahydrofuran or dioxane) (preferably THF) is added dropwise to a stirred solution of borane in THF at 0-500C, preferably about 23°C under an inert atmosphere. The reaction is stirred at warmed to 20-500C, preferably room temperature for 1-24 hours. The reaction is then quenched by cautious addition of methanol at 0-500C, preferably about room temperature. The crude product is concentrated under reduced pressure, taken up in ethyl acetate, washed with water, dried (Na2SO4), filtered, and concentratedExemplification of General Procedure R:Preparation of 2-(3-Methoxy-phenoxy)-ethanolBorane A 250ml three-necked round-bottomed flask equipped with temperature probe and nitrogen bubbler was charged with IM Borane/THF solution (60.4 ml, 60.4 m mol) and a solution of (3- Methoxy-phenoxy)-acetic acid (5.00 g, 27.4 mmol) in THF (2.0 ml) was added dropwise, maintaining reaction temperature below 3O0C. The reaction was allowed to stir at room temperature overnight. The reaction was quenched by dropwise addition of methanol (20 ml) maintaining the reaction temperature below 35°C. The reaction was stirred at room temperature for 4 hours and concentrated under reduced pressure to yield 2-(3-Methoxy-phenoxy)-ethanol (4.51 g, 98%) as a clear oil which was used without further purification. LCMS (Table 1, Method a) 2.43 min., m/z: 169 (M+H)+; 1H NMR (400 MHz, DMSO-J6) δ. 7.15 (m, IH), 6.48 (m, 3H), 4.81 (t, IH), 3.94 (t, 2H), 3.71 (s, 3H), 3.68 (m, 2H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | With trichlorophosphate for 6h; Reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With toluene-4-sulfonic acid at 60℃; for 12h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80% | With toluene-4-sulfonic acid at 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With toluene-4-sulfonic acid at 60℃; for 12h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: 4,5-Diamino-1,3-dimethyluracil; 3-methoxyphenoxyacetic acid With hydrogenchloride; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In 1,4-dioxane; water at 20℃; for 2h; Stage #2: With sodium hydroxide In 1,4-dioxane; water | 4.2. Synthesis of 8-phenoxymethylcaffeine derivatives (3a-j) General procedure: The syntheses of 3a-j were accomplished using the literature procedure.22 1,3-Dimethyl-5,6-diaminouracil23 (4 mmol) and N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride (EDAC; 5.36 mmol) were dissolved in 42 mL dioxane/H2O (1:1) and the appropriate phenoxyacetic acid (4 mmol) was added. A thick suspension was obtained and the pH was adjusted to 5-6 with 4 N aqueous HCl. The reaction was stirred for 2 h at room temperature and neutralized with aqueous NaOH (1 N). The precipitate was collected by filtration and subsequently dissolved in 40 mL dioxane/H2O (1:1). The reaction was heated under reflux for 2 h, cooled to 0 °C and acidified to a pH of 4 with 4 N aqueous HCl. The resulting precipitate, the corresponding 1,3-dimethyl-8-substituted-7H-xanthinyl analogue, was collected by filtration, washed with 50 mL H2O and dried at 50 °C. The 7H-xanthinyl analogue was used in the subsequent reaction without further purification. The corresponding 1,3-dimethyl-8-substituted-7H-xanthinyl analogue (2 mmol) was dissolved in a minimum amount of DMF (approximately 20 mL) at 90 °C. K2CO3 (5 mmol), followed by iodomethane (4 mmol), and the reaction mixture was stirred at 90 °C for 1 h. The reaction progress was followed with TLC employing neutral alumina sheets and ethyl acetate/dichloromethane (1:1) as mobile phase. The insoluble materials were removed by filtration. H2O (350 ml) was added to the filtrate and the mixture was cooled on ice for 3 h. The precipitate that formed was collected by filtration and dried overnight at room temperature. The products were recrystallized from methanol/ethyl acetate (7:5). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1.1: hydrogenchloride; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / 1,4-dioxane; water / 2 h / 20 °C / pH 5 - 6 2.1: sodium hydroxide / 1,4-dioxane; water / 2 h / Reflux 2.2: 0 °C / pH 4 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1.1: hydrogenchloride; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / 1,4-dioxane; water / 2 h / 20 °C / pH 5 - 6 2.1: sodium hydroxide / 1,4-dioxane; water / 2 h / Reflux 2.2: 0 °C / pH 4 3.1: potassium carbonate / N,N-dimethyl-formamide / 1 h / 90 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1.1: thionyl chloride / 3 h / 0 - 20 °C 2.1: sodium hydride / tetrahydrofuran; mineral oil / 5 h / 40 - 45 °C 2.2: 24 h / 20 - 32 °C 3.1: sodium / methanol / 18 h / 0 - 20 °C 3.2: 4 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1.1: thionyl chloride / 3 h / 0 - 20 °C 2.1: sodium hydride / tetrahydrofuran; mineral oil / 5 h / 40 - 45 °C 2.2: 24 h / 20 - 32 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: thionyl chloride / 3 h / 0 - 20 °C 2.1: sodium hydride / tetrahydrofuran; mineral oil / 5 h / 40 - 45 °C 2.2: 24 h / 20 - 32 °C 3.1: sodium / methanol / 18 h / 0 - 20 °C 3.2: 4 h / 20 °C 4.1: trichlorophosphate / <i>N</i>,<i>N</i>-dimethyl-aniline / 2 h / 130 °C 5.1: dimethyl sulfoxide / 48 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1.1: thionyl chloride / 3 h / 0 - 20 °C 2.1: sodium hydride / tetrahydrofuran; mineral oil / 5 h / 40 - 45 °C 2.2: 24 h / 20 - 32 °C 3.1: sodium / methanol / 18 h / 0 - 20 °C 3.2: 4 h / 20 °C 4.1: trichlorophosphate / <i>N</i>,<i>N</i>-dimethyl-aniline / 2 h / 130 °C 5.1: dimethyl sulfoxide / 48 h / 20 °C 6.1: potassium <i>tert</i>-butylate / 1,2-dimethoxyethane / 0.17 h / 40 °C 6.2: 70 h / 100 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: thionyl chloride / 3 h / 0 - 20 °C 2.1: sodium hydride / tetrahydrofuran; mineral oil / 5 h / 40 - 45 °C 2.2: 24 h / 20 - 32 °C 3.1: sodium / methanol / 18 h / 0 - 20 °C 3.2: 4 h / 20 °C 4.1: trichlorophosphate / <i>N</i>,<i>N</i>-dimethyl-aniline / 2 h / 130 °C 5.1: dimethyl sulfoxide / 48 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1.1: thionyl chloride / 3 h / 0 - 20 °C 2.1: sodium hydride / tetrahydrofuran; mineral oil / 5 h / 40 - 45 °C 2.2: 24 h / 20 - 32 °C 3.1: sodium / methanol / 18 h / 0 - 20 °C 3.2: 4 h / 20 °C 4.1: trichlorophosphate / <i>N</i>,<i>N</i>-dimethyl-aniline / 2 h / 130 °C 5.1: dimethyl sulfoxide / 48 h / 20 °C 6.1: potassium <i>tert</i>-butylate / 1,2-dimethoxyethane / 0.17 h / 40 °C 6.2: 70 h / 100 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1.1: thionyl chloride / 3 h / 0 - 20 °C 2.1: sodium hydride / tetrahydrofuran; mineral oil / 5 h / 40 - 45 °C 2.2: 24 h / 20 - 32 °C 3.1: sodium / methanol / 18 h / 0 - 20 °C 3.2: 4 h / 20 °C 4.1: trichlorophosphate / <i>N</i>,<i>N</i>-dimethyl-aniline / 2 h / 130 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1.1: thionyl chloride / 3 h / 0 - 20 °C 2.1: sodium hydride / tetrahydrofuran; mineral oil / 5 h / 40 - 45 °C 2.2: 24 h / 20 - 32 °C 3.1: sodium / methanol / 18 h / 0 - 20 °C 3.2: 4 h / 20 °C 4.1: trichlorophosphate / <i>N</i>,<i>N</i>-dimethyl-aniline / 2 h / 130 °C 5.1: dimethyl sulfoxide / 48 h / 20 °C 6.1: potassium <i>tert</i>-butylate / 1,2-dimethoxyethane / 0.17 h / 40 °C 6.2: 70 h / 100 °C 7.1: sodium hydride / tetrahydrofuran; mineral oil / 0.25 h 7.2: 2 h / 60 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1.1: thionyl chloride / 3 h / 0 - 20 °C 2.1: sodium hydride / tetrahydrofuran; mineral oil / 5 h / 40 - 45 °C 2.2: 24 h / 20 - 32 °C 3.1: sodium / methanol / 18 h / 0 - 20 °C 3.2: 4 h / 20 °C 4.1: trichlorophosphate / <i>N</i>,<i>N</i>-dimethyl-aniline / 2 h / 130 °C 5.1: dimethyl sulfoxide / 48 h / 20 °C 6.1: potassium <i>tert</i>-butylate / 1,2-dimethoxyethane / 0.17 h / 40 °C 6.2: 70 h / 100 °C 7.1: sodium hydride / tetrahydrofuran; mineral oil / 0.25 h 7.2: 2 h / 60 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With benzotriazol-1-ol; diisopropyl-carbodiimide | 6.2. General solid-phase synthetic procedure for the preparation of the dipeptides (9) General procedure: The resulting intermediate 7 was then treated with 20% piperidine in DMF for 20 min to remove the Fmoc-group and subsequently reacted with the corresponding carboxylic acid (3 equiv) by the DIC-HOBt method or acid chloride (3 equiv) in the presence of Et3N to produce 8. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70% | With copper(l) iodide; caesium carbonate In water; dimethyl sulfoxide at 120℃; for 24h; Inert atmosphere; Schlenk technique; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 20 °C 2: N-ethyl-N,N-diisopropylamine / dichloromethane / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 20 °C 2: N-ethyl-N,N-diisopropylamine / dichloromethane / 20 °C 3: palladium 10% on activated carbon; hydrogen / ethanol; ethyl acetate / 2844.39 - 2999.54 Torr |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1.1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 20 °C 2.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 20 °C 3.1: palladium 10% on activated carbon; hydrogen / ethanol; ethyl acetate / 2844.39 - 2999.54 Torr 4.1: tetrahydrofuran; methanol / 0.25 h / 20 °C 4.2: 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 20 °C 2.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 20 °C 3.1: palladium 10% on activated carbon; hydrogen / ethanol; ethyl acetate / 2844.39 - 2999.54 Torr 4.1: tetrahydrofuran; methanol / 0.25 h / 20 °C 4.2: 20 °C 5.1: acetic acid / 3 h / 100 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With hydrogenchloride In water Inert atmosphere; Reflux; | 1 -(Benzimidazol-2-ylmethoxy)-3-methoxybenzene (51). 1 -(Benzimidazol-2-ylmethoxy)-3-methoxybenzene (51). A suspension of phenylenediamine (15.12 g, 0.14 mol) and 3-methoxyphenoxyacetic acid (25.5 g, 0.14 mol) in 4M HCI (150 mL) was refluxed overnight under Ar. The reaction mixture was cooled in an ice bath. The solid was collected and washed with cold H2O (200 mL). To the solid was added CH2CI2 (150 mL) and saturated NaHCO3 (150 mL). After stirring for 1 hr, the organic phase was separated, washed with brine (75 mL), filtered through phase separation filter paper and concentrated in vacuo to give 32.7 g (92%) of 51 as an oil which solidified. The HPLC analysis showed a purity of 98%. 1 H NMR (60 MHz, CDCI3): δ 10.0 (br s, 1 H), 6.3-7.9 (m, 8H), 5.0 (s, 2H), 3.7 (s, 3H) ppm. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: hydrogenchloride / water / Inert atmosphere; Reflux 2: potassium carbonate / acetonitrile / 20 °C / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: silver nitrate; ammonium peroxydisulfate / water; acetonitrile / 0.08 h / 80 °C 2: 3,5-dichloropyridine; trifluoroacetic acid; palladium diacetate / acetic acid / 15 h / 110 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
57% | With ammonium peroxydisulfate; silver nitrate In water; acetonitrile at 80℃; for 0.0833333h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 64% 2: 16% | In water; acetonitrile for 18h; Irradiation; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
32% | With bis-(2-oxo-3-oxazolidinyl)phosphoryl chloride; N-ethyl-N,N-diisopropylamine In dichloromethane at 25℃; for 16h; | 20.2 Step 2: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-(3-methoxyphenoxy)acetamide To a stirred mixture of 111 2-(3-methoxyphenoxy)acetic acid (100 mg, 0.549 mmol) in 31 DCM (5 mL) was added 48 DIEA (106 mg, 0.824 mmol), 6 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (113 mg, 0.549 mmol) and 49 Bop-Cl (168 mg, 0.66 mmol). The mixture was stirred at 25° C. for 16 hours then the reaction mixture was quenched with 43 water (20 mL), extracted with DCM (3×20 mL). The combined extracts were washed with brine (20 mL), dried over anhydrous Na2SO4 and concentrated. The residue was purified by prep-HPLC to afford the desired 109 product (61 mg, Yield 32%). 1H NMR (400 MHz, MeOD) δ 7.21 (dd, J1=J2=8.0 Hz, 1H), 7.17-7.03 (m, 4H), 6.59-6.51 (m, 3H), 4.52 (s, 2H), 4.05-4.01 (m, 1H), 3.77 (s, 3H), 3.73 (d, J=2.8 Hz, 2H), 3.47-3.37 (m, 2H), 2.92 (d, J=5.2 Hz, 2H), 2.87 (d, J=5.2 Hz, 2H), 2.61 (d, J=6.0 Hz, 2H). LCMS (m/z): 371.1 (M+1). |
61 mg | With bis-(2-oxo-3-oxazolidinyl)phosphoryl chloride; N-ethyl-N,N-diisopropylamine In dichloromethane at 25℃; for 16h; | 20.2 Step 2: N-(3-(3,4-dihydroisoquinolin-2(lH)-yl)-2-hydroxypropyl)-2-(3- methoxyphenoxy)acetamide To a stirred mixture of 2-(3-methoxyphenoxy)acetic acid (100 mg, 0.549 mmol) in DCM (5 mL) was added DIEA (106 mg ,0.824 mmol), l-amino-3-(3,4-dihydroisoquinolin- 2(lH)-yl)propan-2-ol (113 mg, 0.549 mmol) and Bop-Cl (168mg, 0.66 mmol). The mixture was stirred at 25 °C for 16 hours then the reaction mixture was quenched with water (20 mL), extracted with DCM (3x20 mL). The combined extracts were washed with brine (20 mL), dried over anhydrous Na2S04 and concentrated. The residue was purified by prep-HPLC to afford the desired product (61 mg, Yield 32%). 1H NMR (400MHz, MeOD) δ 7.21 (dd, /,= J2 =8.0 Hz, 1H), 7.17 - 7.03 (m, 4H), 6.59 - 6.51 (m, 3H), 4.52 (s, 2H), 4.05 -4.01 (m, 1H), 3.77 (s, 3H), 3.73 (d, J=2.8 Hz, 2H), 3.47 - 3.37 (m, 2H), 2.92 (d, J=5.2 Hz, 2H), 2.87 (d, J=5.2 Hz, 2H), 2.61 (d, J=6.0 Hz, 2H). LCMS (m/z): 371.1 (M+l). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: dichloromethane / 1 h / 20 °C 2: dichloromethane / 24 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In dichloromethane at 20℃; for 1h; | General Procedure for Synthesis of Substituted acetamides (4a-4hh, 4' and 4'') General procedure: To a stirred solution of methyl ester (2a-i, 1 mmol) in MeOH-H2O (3 : 1, 4 mL) was added LiOH•H2O (2 mmol), and the resulting mixture was refluxed for 2 h. After cooling, the solvent was removed under reduced pressure, the residue was acidified with 10% HCl aq. The aqueous mixture was extracted with EtOAc (5 mL x 6), and the organic extracts were combined, dried over Na2SO4, and evaporated to give the carboxylic acid. To a stirred solution of amide (3a-n, 3' and 3'', 1 mmol) in CH2Cl2 (5 mL) was added TFA (8 mmol), and the reaction mixture was stirred at room temperature for 24 h. The reaction was quenched with satd. NaHCO2 aq., and the organic layer was separated. The aqueous layer was extracted with CH2Cl2 (5 mL x 10), and the organic layer and extracts were combined, dried over K2CO3, and evaporated to give the amine. To a stirred solution of the carboxylic acid prepared above in CH2Cl2 (5 mL) was added CDI (1 mmol), and the reaction mixture was stirred at room temperature for 1 h. To the mixture was added a solution of the amine prepared above in CH2Cl2 (2 mL), and the resulting solution was stirred at room temperature for 24 h. The solvent was removed under reduced pressure, and the residue was chromatographed on silica gel (15 g, hexane : acetone = 5 : 1 ~ 3 : 1) to give substituted acetamide. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: N,N-dimethyl-formamide; oxalyl dichloride / dichloromethane / 3 h / 20 °C 2: triethylamine / dichloromethane / 2 h / -5 - 25 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: N,N-dimethyl-formamide; oxalyl dichloride / dichloromethane / 3 h / 20 °C 2: triethylamine / dichloromethane / 2 h / -5 - 25 °C 3: methanol; lithium hydroxide monohydrate; water / tetrahydrofuran / 4 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride In water | 2.1 Synthesis of phenoxyacetic acid and ring-substituted phenoxyacetic acids General procedure: General procedure: To a solution of phenol or ring-substituted phenol (20 mmol) in water (20 mL) was added sodium chloroacetate (22 mmol) at rt. The mixture was heated and stirred at reflux for 8 h. The reaction mixture was cooled and the pH was adjusted to a value of 1.0 with 5 N HCl. The solution was filtered and the obtained solid was recrystallized from dehydrated ethanol to afford the pure product. 3-Methoxyphenoxyacetic acid (1m) Following the general procedure the compound 1m was obtained in 77 % yield as a white solid. m.p. 118-119 °C. 1H NMR (400 MHz, CDCl3) δ 10.08 (s,1H), 7.22 (dd, J = 19.0, 11.2 Hz, 1H), 6.58 (dd, J = 7.7, 1.7 Hz,1H), 6.50 (dd, J = 9.1,1.6 Hz, 2H), 4.67 (s, 2H), 3.79 (s, 3H). MS (ESI)m/z: 180.8[M-H]-. (S8) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: acetic acid / ethanol / 8 h / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: sodium hydroxide / Reflux 4: potassium carbonate / acetone / 4 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: sodium hydroxide / Reflux 4: potassium carbonate / acetone / 4 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: sodium hydroxide / Reflux 4: potassium carbonate / acetone / 4 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: sodium hydroxide / Reflux 4: potassium carbonate / acetone / 5 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: sodium hydroxide / Reflux 4: potassium carbonate / acetone / 5 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: sodium hydroxide / Reflux 4: potassium carbonate / acetone / 5 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: sodium hydroxide / Reflux 4: potassium carbonate / acetone / 5 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: sodium hydroxide / Reflux 4: potassium carbonate / acetone / 5 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: acetic acid / ethanol / 8 h / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: acetic acid / ethanol / 8 h / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: acetic acid / ethanol / 8 h / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: sodium hydroxide / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: acetic acid / ethanol / 8 h / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: acetic acid / ethanol / 8 h / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: sodium hydroxide / Reflux 4: potassium carbonate / acetone / 4 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: sodium hydroxide / Reflux 4: potassium carbonate / acetone / 4 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / ethanol; water / Reflux 2: hydrazine hydrate monohydrate / ethanol / Reflux 3: sodium hydroxide / Reflux 4: potassium carbonate / acetone / 4 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
96% | With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; triethylamine In ethyl acetate at 0 - 20℃; for 18h; | 4.1.3.7 N-(1-(6-acetamido-5-phenylpyrimidin-4-yl)piperdin-3-yl)-2-(3-methoxyphenoxy)acetamide (13) Propylphoshonic anhydride (T3P) solution (≥50wt % in 52 EtOAc, (0.2mL, 0.674mmol) was added to a solution of 72 2-(3-methoxyphenoxy) acetic acid 6g (0.058g, 0.321mmol), 16 5 (0.100g, 0.321mmol), and 21 Et3N (0.081g, 0.802mmol) in 49 CH2Cl2 (10mL) at 0°C. The reaction was allowed to warm to room temperature overnight. The mixture was subsequently diluted with CH2Cl2 and the organic layer was sequentially washed with saturated aqueous NaHCO3 and aqueous 2M HCl and finally dried over Na2SO4. Purification by flash chromatography (CH2Cl2/MeOH) yielded 73 13 (91mg, 96%) as a white solid; 1H NMR (500MHz, DMSO-d6) δ (ppm) 9.05 (s, 1H), 8.41 (s, 1H), 8.01 (s, 1H), 7.822 (dd, J=22.8, 7.5Hz, 2H), 7.495 (m, 3H), 7.189 (d, J=7.6Hz, 2H), 7.162 (d, J=7.2Hz, 2H), 3, 963 (s, 3H), 3.718 (m, 1H), 3.623 (m, 2H), 3.18 (m, 2H), 2.512 (m, 2H), 1.91 (s, 3H), 1.68 (m, 2H); 13C NMR (126MHz, DMSO-d6) δ169, 168, 164, 162, 159,156, 135, 132, 131, 129, 123, 115, 105, 52, 49, 46, 31, 23:DEPT-135 NMR (126MHz, DMSO-d6)-ve mode CH2 peak δ 52, 49, 35, 31, 23. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dmap; diisopropyl-carbodiimide In dichloromethane at 20℃; | (General Method 2): General procedure: To a round bottom flaskwas added 1 (1.41 g, 4.5 mmol), (3-methyl-phenoxy)acetic acid (3.0 g,18.1 mmol), and DMAP (550 mg, 4.5 mmol) in DCM (30 ml) at ambienttemperature. Once a homogenous solution was observed, DIC wasadded (2.8 ml, 18.1 mmol). The mixture was allowed to stir overnight.The next morning the mixture was filtered, and the filtrate was rotovapedonto silica gel and subjected to flash chromatography. The resultantfoam was then crystallized from methanol and DCM yielding1.08 g of white crystal (73%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 12 h / 20 °C 2: triethylamine; dmap / dichloromethane / 12.5 h / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 12 h / 20 °C 2: triethylamine; dmap / dichloromethane / 12.5 h / 0 °C 3: triethylamine; 18-crown-6 ether; potassium cyanide / dichloromethane / 72 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 12 h / 20 °C 2: triethylamine; dmap / dichloromethane / 12.5 h / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 12 h / 20 °C 2: triethylamine; dmap / dichloromethane / 12.5 h / 0 °C 3: triethylamine; 18-crown-6 ether; potassium cyanide / dichloromethane / 72 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 3 h / 0 °C 2: pyridine / tetrahydrofuran / 0 - 20 °C 3: hydrogenchloride / ethyl acetate / 0.5 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 3 h / 0 °C 2: pyridine / tetrahydrofuran / 0 - 20 °C |
Tags: 2088-24-6 synthesis path| 2088-24-6 SDS| 2088-24-6 COA| 2088-24-6 purity| 2088-24-6 application| 2088-24-6 NMR| 2088-24-6 COA| 2088-24-6 structure
[ 215162-34-8 ]
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[ 215162-34-8 ]
2,2',2''-(Benzene-1,3,5-triyltris(oxy))triacetic acid
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[ 1878-83-7 ]
2-(3-Hydroxyphenoxy)acetic acid
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[ 102-39-6 ]
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P309 | IF exposed or if you feel unwell: |
P310 | Immediately call a POISON CENTER or doctor/physician. |
P311 | Call a POISON CENTER or doctor/physician. |
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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