Pyridine → HCID 69429519, compound

Participants

Reaction Steps

To a solution of (3RS,4RS)-pyrrolidine-3,4-dicarboxylic acid diethyl ester (2.04 g, 9.48 mmol) [Bull. Soc. Chim. Fr. 1988, 579] in dichloromethane (30 ml) was added pyridine (1.12 g, 14.22 mmol), N,N-dimethylaminopyridine (10 mg) and methanesulfonyl chloride (1.30 g, 11.38 mmol) and stirred for 2 h at RT The solution was washed with 0.5 M aqueous HCl and water, dried and evaporated. Flash chromatography (EtOAc/hexane 1:1) gave 1.6 g (42%) of (3RS,4RS)-1-methanesulfonyl-pyrrolidine-3,4-dicarboxylic acid diethyl ester as a colorless solid, MS: 310 (M+NH4)+.

Provenance & Evidence