Imidazole → HCID 24824074, compound

Participants

Reaction Steps

To a solution of (1R)-2-[benzyl[2-(4-bromophenyl)ethyl]amino]-1-(3-chlorophenyl)ethanol (18.5 g) in N,N-dimethylformamide (40 ml) were successively added imidazole (3.96 g) and tert-butyldimethylsilyl chloride (7.52 g) and the solution was stirred at room temperature for 14 hours. The reaction mixture was quenched by the addition of water (100 ml) and extracted with ethyl acetate (100 ml×1). The extract was washed with water (100 ml×2), brine (100 ml×1), and dried over magnesium sulfate. Filtration followed by evaporation gave a colorless oil, which was chromatographed on silica gel (eluent: hexane/ethyl acetate) to give (2R)-N-benzyl-N-[2-(4-bromophenyl)ethyl]-2-[[tert-butyl(dimethyl)silyl]oxy]-2-(3-chlorophenyl)ethanamine (21.0 g) as a colorless oil.

Provenance & Evidence