申请人:Syngenta Crop Protection, Inc.
公开号:US07893270B2
公开(公告)日:2011-02-22
The present invention relates to a process for the preparation of compounds of formula (I), wherein the substituents are as defined in claim 1, by reacting a compound of formula (II), with a bromine or chlorine source to form a compound of formula (III), wherein X is chlorine or bromine; reacting that compound with water to form the compound of formula (IV), converting that compound, using a compound of formula (V), wherein M+ is the hydrogen cation or an alkali metal ion, alkaline earth metal ion or ammonium ion, into the compound of formula (VI), and treating that compound with a cyanide source in the presence of a base.
本发明涉及一种制备式(I)化合物的方法,其中取代基如权利要求1所定义,通过将式(II)化合物与溴源或氯源反应形成式(III)化合物,其中X为氯或溴;将该化合物与水反应形成式(IV)化合物,使用式(V)化合物(其中M+为氢阳离子或碱金属离子、碱土金属离子或铵离子)将该化合物转化为式(VI)化合物,并在碱的存在下用氰源处理该化合物。