Fungicidal or bactericidal di:hydro triazolone derivs. prepn. - by cyclising appropriate intermediate with a substd. aniline

摘要

3H- 1,2,4-triazol-3-ones of formula (I) in which R is 1-6C alkyl, are made by (a) cyclising an intermediate of formula (II) in which each W is a salient gp., with a substd. aniline of formula (II); and opt. (b) forming the acceptable salts or liberating the free base from the salts.Formulae to follow.