Process for the production of 1,2,4-triazole derivatives
申请人:Ciba-Geigy Corporation
公开号:US03992398A1
公开(公告)日:1976-11-16
Process for the production of 1-alkyl-3-hydroxy-5-chloro-1,2,4-triazoles wherein an alkylhydrazine is reacted in an inert solvent in the presence of an acid binding agent with cyanogen chloride to 1-alkyl-1-cyanohydrazine which is subsequently cyclized with phosgene.