4-Chlorobenzenesulfonyl chloride → HCID 67863379, compound

Participants

Reaction Steps

To a suspension of (2S,4R)-4-(4-chlorophenyl-sulfonylamino)-2-[(Z)-2-(4-methoxycarbonylphenyl)vinyl]pyrrolidine (11.5 g) in dichloromethane (200 ml) were added triethylamine (3.80 ml) and 4-chlorobenzenesulfonyl chloride (5.77 g) under ice bath cooling and the mixture was stirred at room temperature for 1 hour. The solution was washed successively with diluted hydrochloric acid, saturated aqueous sodium bicarbonate and brine and dried over magnesium sulfate. The solvent was evaporated in vacuo and the residual solid was collected by filtration to give (2S,4R)-1-(4-chlorophenylsulfonyl)-4-(4-chlorophenylsulfonylamino)-2-[(Z)-2-(4-methoxycarbonylphenyl)vinyl]pyrrolidine (15.71 g) as a white powder

Provenance & Evidence