申请人:Imperial Chemical Industries plc
公开号:US05258547A1
公开(公告)日:1993-11-02
A process for preparing halogenated compounds of formula RCY(Z)CH.sub.2 CH(X)C(CH.sub.3)CH.sub.2 COR.sup.1 where X, Y and Z are halo, R is alkyl, halo, haloalkyl or aryl, and R.sup.1 is hydroxy, halo, alkoxy, alkyl or haloalkyl, or the residue of a pyrethroidal alcohol, in which a compound of formula CH.sub.2 =CHC(CH.sub.3).sub.2 COR.sup.1 is reacted with a sulphonyl halide of formula RCY(Z)SO.sub.2 X. The process avoids the use of volatile halocarbons in the production of valuable intermediates for insecticides.
一种制备卤代化合物的方法,其化学式为RCY(Z)CH.sub.2 CH(X)C(CH.sub.3)CH.sub.2 COR.sup.1,其中X、Y和Z为卤素,R为烷基、卤代烷基或芳基,R.sup.1为羟基、卤素、烷氧基、烷基或卤代烷基,或拟除虫菊酯醇的残基,其方法为将化合物CH.sub.2 =CHC(CH.sub.3).sub.2 COR.sup.1与化学式为RCY(Z)SO.sub.2 X的磺酰卤反应。该过程避免了在杀虫剂有价值的中间体生产中使用挥发性卤代碳化合物。