m-Chloroperbenzoic acid → HCID 13474331, compound

Participants

Reaction Conditions

Reaction Steps

16.0 g (60.0 millimoles) of 5-benzylthio-4-chloro-2-methylpyridazin-3(2H)-one from Method 4 were dissolved in 200 ml of dichloromethane, the solution was cooled to -20° C. and a solution of 11.4 g (66.1 millimoles) of m-chloroperbenzoic acid in dichloromethane was added dropwise. Stirring was continued for 1 hour at -10° C., and then overnight at room temperature. The reaction solution was washed three times with saturated NaHCO3 solution and once with water, dried and evaporated down, and the residue was triturated with diethyl ether and then filtered off under suction to give 13.1 g (77%) of a product of melting point 129°-131° C. (active ingredient no. 2 a).

Provenance & Evidence