Imidazole → (R)-(-)-1-(tert-butyldimethylsilanyloxy)-3-chloropropan-2-ol

Participants

Reaction Steps

To N,N-dimethylformamide (40 ml) solution of (R)-(−)-3-chloro-1,2-propanediol (7 g), under ice-cooling and stirring condition, were added tert-butyldimethylchlorosilane (10.6 g) and imidazole (5.2 g), then stirred at a room temperature overnight. Ice-water (120 ml) was added to the reaction mixture, and extracted with ethyl acetate (50 ml) 3 times, the extracts were combined together and washed with an aqueous solution being saturated with sodium chloride, then dried over anhydrous magnesium sulfate. After being filtrated under a reduced pressure, the filtrate was concentrated, there was obtained (R)-(−)-1-(tert-butyldimethylsilanyloxy)-3-chloropropan-2-ol (13.24 g, yield: 92.4%) as colorless liquid product.

Provenance & Evidence