m-Chloroperbenzoic acid → 2-(4-Chloro-phenylsulfonylamino)-4,5-dimethoxy-N-(4-(1-oxo-thiomorpholine-4-sulfonyl)-phenyl)-benzamide

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Reaction Steps

500 mg (0.82 mmol) of 2-(4-chloro-phenylsulfonylamino)-4,5-dimethoxy-N-(4-(thiomorpholine-4-sulfonyl)-phenyl)-benzamide in 50 ml of acetone were cooled to 0° C. A solution of 371 mg (1.23 mmol) of 57% m-chloroperbenzoic acid in 20 ml of acetone was added and the mixture was stirred at room temperature over night. For working up it was poured onto water/ice and the precipitate was filtered off with suction. The two products obtained as a mixture were separated by chromatography over silica with methylene chloride/methanol (97:3).

Provenance & Evidence