m-Chloroperbenzoic acid → HCID 10400708, compound

Participants

Reaction Steps

To a mixture of 2,3-dihydro-2-oxo-6-sulfamoyl-1H-thieno[2,3-b][1,4]thiazine (0.25 g, 1 mmol) in ethyl acetate (8 ml) and ethanol (8 ml) was added 3-chloroperoxybenzoic acid (0.43 g, 80-85% pure, 2 mmol). The reaction mixture was stirred overnight and the resulting solid collected, triturated with hot ethyl acetate and dried to give 0.25 g, 2,3-dihydro-2,4-dioxo-6-sulfamoyl-1H-thieno[2,3-b][1,4]thiazine, mp 222°-223° C.

Provenance & Evidence