2-氯苄醇

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 2-chlorobenzyl alcohol (1.0 g, 7.0 mmol) in diethyl ether (15 ml) at 0° C. was added N,N-diisopropylethyl amine (2.4 ml, 14.0 mmol), and phosgene solution in toluene (7.5 ml, 14.0 mmol). The mixture was allowed to warm up to room temperature in 2 h while stirring, then it was filtered. The diethyl ether was removed by rotary evaporator, and the solution of 2-chlorobenzyl chloroformate in toluene was carried on for the next step reaction. it was filtered The diethyl ether was removed by rotary evaporator the solution of 2-chlorobenzyl chloroformate in toluene was carried on for the next step reaction

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 2-chlorobenzyl alcohol (1.0 g, 7.0 mmol) in diethyl ether (15 ml) at 0° C. was added N,N-diisopropylethyl amine (2.4 ml, 14.0 mmol), and phosgene solution in toluene (7.5 ml, 14.0 mmol). The mixture was allowed to warm up to room temperature in 2 h while stirring, then it was filtered. The diethyl ether was removed by rotary evaporator, and the solution of 2-chlorobenzyl chloroformate in toluene was carried on for the next step reaction. it was filtered The diethyl ether was removed by rotary evaporator the solution of 2-chlorobenzyl chloroformate in toluene was carried on for the next step reaction

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of trifluoromethanesulfonic anhydride (163 μL, 0.966 mmol) in methylene chloride (1 mL) held at -75° C. under argon was added 2-chlorobenzyl alcohol (138 mg, 0.966 mmol) and diisopropylethylamine (168 μL, 0.966 mmol) in methylene chloride (2 mL) over one minute. After being stirred for 15 minutes, a solution of ethyl 3-[2-n-butyl-1-t-butoxycarbonyl-1H-imidazol-4-yl]propanoate (285 mg, 0.878 mmol) in methylene chloride (2 mL) was added over a 3-minute interval at -75° C. The reaction mixture was then allowed to warm to room temperature and was stirred for 18 hours. The solvent was evaporated, and this crude product was flash chromatographed over silica gel with a gradient of ethyl acetate in hexane to give 179 mg (58%) of ethyl 3-[2-n-butyl-1-{(2-chlorophenyl)methyl}-1H-imidazol-5-yl]-propanoate as an oil. TLC on silica gel with 1:1 hexane/ethyl acetate showed a single product with an Rf of 0.41. held at -75° C. under argon was stirred for 18 hours The solvent was evaporated chromatographed over silica gel with a gradient of ethyl acetate in hexane

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of trifluoromethanesulfonic anhydride (163 μL, 0.966 mmol) in methylene chloride (1 mL) held at -75° C. under argon was added 2-chlorobenzyl alcohol (138 mg, 0.966 mmol) and diisopropylethylamine (168 μL, 0.966 mmol) in methylene chloride (2 mL) over one minute. After being stirred for 15 minutes, a solution of ethyl 3-[2-n-butyl-1-t-butoxycarbonyl-1H-imidazol-4-yl]propanoate (285 mg, 0.878 mmol) in methylene chloride (2 mL) was added over a 3-minute interval at -75° C. The reaction mixture was then allowed to warm to room temperature and was stirred for 18 hours. The solvent was evaporated, and this crude product was flash chromatographed over silica gel with a gradient of ethyl acetate in hexane to give 179 mg (58%) of ethyl 3-[2-n-butyl-1-{(2-chlorophenyl)methyl}-1H-imidazol-5-yl]-propanoate as an oil. TLC on silica gel with 1:1 hexane/ethyl acetate showed a single product with an Rf of 0.41. held at -75° C. under argon was stirred for 18 hours The solvent was evaporated chromatographed over silica gel with a gradient of ethyl acetate in hexane