m-Chloroperbenzoic acid → 2-Amino-4-(4-aminophenylsulfinylmethyl)thiazole

Participants

Reaction Steps

A solution of 3-chloroperbenzoic acid (4.9 g) in dichloromethane (100 ml) was dropwise added to a solution of 2-amino-4-(4-aminophenylthiomethyl)thiazole (5.1 g) in a mixture of dichloromethane (200 ml) and N,N-dimethylformamide (10 ml) at 5° C. with stirring. The mixture was stirred at 5° C. for 1.5 hours with stirring. The precipitates were collected by filtration, washed with ethyl acetate and dried in vacuo to give solid. The solid was recrystallized from ethanol to give 2-amino-4-(4-aminophenylsulfinylmethyl)thiazole (4.70 g, yield: 86.3%).

Provenance & Evidence