Imidazole → HCID 53934734, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of imidazole (3.57 g) in dimethylformamide (100 ml) was added potassium t-butoxide (5.89 g) portionwise at room temperature and the mixture was stirred at the same temperature for 10 minutes. Then a solution of (2R,4R)-1-allyloxycarbonyl-4-t-butyldimethylsilyloxy-2-(3-methanesulfonyloxypropyl)pyrrolidine (20.1 g), in dimethylformamide (20 ml) was added and the mixture was heated at 60° C. After stirring for 1 hour, water (200 ml) was added and the mixture was extracted with hexane-ethyl acetate (2:1) (200 ml×5). The combined extract was washed with water (1 l), brine (1 l), and dried over magnesium sulfate. Evaporation of the solvent gave (2R,4R)-1-allyloxycarbonyl-4-t-butyldimethylsilyloxy-2-[3-(imidazol-1-yl)propyl]pyrrolidine (18.1 g) as a yellow paste.

Provenance & Evidence