m-Chloroperbenzoic acid → HCID 13066718, compound

Participants

Reaction Steps

A solution of m-chloroperbenzoic acid (1.3 g) in chloroform (20 ml) was added dropwise to a solution of 3-methyl-7-(2-chlorophenylthio)-2,3-dihydrobenzofuran-2-one (1.8 g) in chloroform (20 ml) in 10 minutes at a temperature below 6° C. with stirring, and the mixture was stirred at the same temperature for 30 minutes and then filtered. The organic layer was separated, washed with saturated aqueous sodium bicarbonate and water in turn, dried and evaporated under reduced pressure. The oily residue was crystallized with ethanol to give 3-methyl-7-(2-chlorobenzenesulfinyl)-2,3-dihydrobenzofuran-2-one (1.2 g), mp. 120°-122° C.

Provenance & Evidence