发明授权
US3992398A Process for the production of 1,2,4-triazole derivatives 失效
生产1,2,4-三唑衍生物的方法

Process for the production of 1,2,4-triazole derivatives
摘要:
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.
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