Chloroacetyl chloride → N-[1-(3-Bromophenyl)-2-hydroxy-1-methylethyl]-2-chloroacetamide

Participants

Reaction Steps

A solution of crude (RS)-2-amino-2-(3-bromo-phenyl)-propan-1-ol (8.38 g, 36 mmol) and triethylamine (6.08 ml, 44 mmol) in acetonitrile (140 ml) was treated dropwise at −2° C. with chloro-acetyl chloride (3.25 ml, 40 mmol). After complete addition, the orange colored solution was left to warm to room temperature and stirring was continued for 2 h. For the workup, to the reaction was added silica gel (10 g) and it was evaporated at reduced pressure, thereafter, it was purified by chromatography on silica gel using a gradient of dichloromethane/methanol=100/0 to 90/10 as the eluent. There were obtained 9.62 g (86% of theory) of (RS)—N-[1-(3-bromo-phenyl)-2-hydroxy-1-methyl-ethyl]-2-chloro-acetamide as a light brown oil. MS (ISP): m/z=304.1 [M+H]+, 306.1 [M+2+H]+, 308.2 [M+4+H]+.

Provenance & Evidence