m-Chloroperbenzoic acid → HCID 19805451, compound

Participants

Reaction Steps

3-Chloroperbenzoic acid (150mg) was added to a stirred solution of 1,2-dihydro-2-(4-butylthiophenyl)-3H-indazol-3-one (250 mg) in methylene chloride (5 ml) at 0-5° C. Stirring was continued for 15 minutes after the addition was complete. The reaction mixture was then washed with water, dried (MgSO4) and evaporated in vacuo. The residue was purified by column chromatography using methylene chloride/ether (70:30 v/v) to give 1,2-dihydro-2-(4-butylsulphinylphenyl)-3H-indazol-3-one (Ex. 52) as a solid (160 mg), m.p. 168-169° C.

Provenance & Evidence