m-Chloroperbenzoic acid → 3,4-Dimethoxy-1,2,5-thiadiazole 1-oxide
Reaction equation
[CH3:1][O:2][C:3]1[C:7]([O:8][CH3:9])=[N:6][S:5][N:4]=1.ClC1C=CC=C(C(OO)=[O:18])C=1>C(Cl)(Cl)Cl>[CH3:1][O:2][C:3]1[C:7]([O:8][CH3:9])=[N:6][S:5](=[O:18])[N:4]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A solution of 3,4-dimethoxy-1,2,5-thiadiazole (35.2 g; 24.1 mmoles) [prepared according to the procedure described in J. Org. Chem., 40, 2749 (1975)] in 100 ml of chloroform was added over a period of 3 minutes to a stirred solution of m-chloroperbenzoic acid (50.7 g; 25.0 mmoles; 85% assay) in 900 ml of chloroform at 20°, using a cooling bath to keep the exothermic reaction from rising above 32°. After stirring for 3 hours at ambient temperature, the excess peracid was reacted with an additional 2.0 g of 3,4-dimethoxy-1,2,5-thiadiazole and stirred for 1 hours.