申请人:Syngenta Crop Protection, Inc.
公开号:US06265585B1
公开(公告)日:2001-07-24
A process for the preparation of a compound of formula (I), wherein X is a leaving group; which process comprises, a) for the preparation of a compound of formula (I) wherein X is —OS(═O)2A and A is as defined in the specification, reacting a compound of formula (II) with a sulfonylating agent; or, b) for the preparation of a compound of formula (I) wherein X is iodine, reacting a compound of formula (III) with an iodinating agent, preferably sodium iodide; or, c) for the preparation of a compound of formula (I) whrein X is bromine, reacting a compound of formula (IV) with a brominating agent; or, d) for the preparation of a compound (I) wherein X is chlorine or bromine, reacting a compound (V), wherein R and X are as defined in the specification, with a chlorinating agent, a compound of formula (Ib), the use thereof and a process for the preparation of a compound of formula (II) and a compound of formula (A) are described.
一种制备式(I)化合物的方法,其中X是一个离去基团;该方法包括:a)为制备式(I)化合物,其中X为—OS(═O)2A且A在规范中定义,与磺酰化试剂反应;或b)为制备式(I)化合物,其中X为碘,与碘化试剂,优选为碘化钠,反应;或c)为制备式(I)化合物,其中X为溴,与溴化试剂反应;或d)为制备化合物(I),其中X为氯或溴,与化合物(V)反应,其中R和X在规范中定义,与氯化试剂反应,描述了化合物(Ib)的使用以及制备化合物(II)和化合物(A)的方法。