4-Chlorophenyl Isocyanate → HCID 11526142, compound

Participants

Reaction Steps

6.4 0.12 ml of triethylamine and 127 mg (0.830 mmol) of 4-chlorophenyl isocyanate are added to a solution of 250 mg (0.658 mmol) of (R)-4,4-dimethoxy-2-[4-(2-oxo-2H-pyridin-1-yl)phenylcarbamoyl]pyrrolidinium chloride in 10 ml of dichloromethane. After stirring at room temperature for one hour, the reaction mixture is evaporated, and the residue is chromatographed on a silica-gel column with dichloromethane/methanol 95:5 as eluent, giving 1-N-[(4-chlorophenyl)]-2-N-{[4-(2-oxo-2H-pyridin-1-yl)phenyl]}-(R)-4,4-dimethoxypyrrolidine-1,2-dicarboxamide (“A7”) as a colourless solid; ESI 497.

Provenance & Evidence