Ethyl chloroformate → HCID 140376332, compound

Participants

Reaction Steps

0.55 ml of ethyl chloroformate is added dropwise to a solution of 2.0 g of benzyl [[(S)-1-amidino-3-piperidinyl]methyl]carbamate hydrochloride in 200 ml of methylene chloride. The reaction mixture is cooled to 0°. 113 ml of 0.1N sodium hydroxide solution are added dropwise while stirring. Subsequently, the mixture is stirred in an ice bath. The phases are separated. The organic phase is washed with water, dried and evaporated. There are obtained 1.5 g of benzyl (S)-1-(ethoxycarbonylamino-imino-methyl)-piperidin-3-ylmethylcarbamate, MS (FAB): 363.2 (M+H)+.

Provenance & Evidence