3-(Triphenyl-lambda~5~-phosphanylidene)butan-2-one → 1-Allyloxycarbonyl-3-(2-methyl-3-oxo-1-butenyl)pyrrolidine

Participants

Reaction Steps

A solution of 1-allyloxycarbonyl-3-formylpyrrolidine (13.45 g) and 3-triphenylphosphoranylidenebutan-2-one (25.60 g) in dichloromethane (15 ml) was refluxed for 20 hours. The mixture was concentrated under reduced pressure to give a syrup. The syrup was subjected to a column chromatography on silica gel (200 g) and eluted with a mixture of ethyl acetate and hexane (4:6 V/V) to give 1-allyloxycarbonyl-3-(2-methyl-3-oxo-1-butenyl)pyrrolidine (16.52 g).

Provenance & Evidence