Water → HCID 20345011, compound

Participants

Reaction Steps

122 5 ml of 40% strength peracetic acid are added dropwise in the course of 30 minutes to a solution, which is kept at room temperature by cooling, of 100 g of 5-chloro-6-(2',4'-dichlorophenoxy)-2-methylthiobenzimidazole in 800 ml of glacial acetic acid, with stirring. The resulting dark red solution is stirred for a further 15 hours at room temperature. A viscous suspension forms and 4 l of demineralised water are added to this. The precipitate formed is then filtered off with suction, washed with water and dried in vacuo at 50° C. This gives 96 g of 5-chloro-6-(2',4'-dichlorophenoxy)-2-methylsulphonylbenzimidazole with a melting point of 215°-218° C., which corresponds to a yield of 89%.

Provenance & Evidence