m-Chloroperbenzoic acid → HCID 15729150, compound

Reaction equation

[NH2:1][C:2]1[S:3][C:4]([S:7][C:8]2[CH:13]=[CH:12][C:11]([NH2:14])=[CH:10][CH:9]=2)=[CH:5][N:6]=1.ClC1C=CC=C(C(OO)=[O:23])C=1>C(Cl)(Cl)Cl.CN(C)C=O>[NH2:1][C:2]1[S:3][C:4]([S:7]([C:8]2[CH:13]=[CH:12][C:11]([NH2:14])=[CH:10][CH:9]=2)=[O:23])=[CH:5][N:6]=1

Participants

Procedure

To a solution of 2-amino-5-(4-aminophenylthio)thiazole (4.0 g) in a mixture of chloroform (140 ml) and N,N-dimethylformamide (20 ml) was dropwise added the solution of 3-chloroperbenzoic acid (4.65 g) in chloroform (50 ml) at 5° C. with stirring. The mixture was stirred at 5° C. for 4 hours. The precipitates were collected by filtration, washed with 10% aqueous sodium bicarbonate and water. The solid was dried in vacuo to give 2-amino-5-(4-aminophenylsulfinyl)thiazole (3.75 g, yield: 87.5%). mp: 173°-175° C.