The invention provides novel arylalkene compounds of formula I, a process for their preparation and their use as intermediates for insecticidal compounds, comprising, ##STR1## wherein W represents 1 to 4 substituents selected from halo, alkyl, alkoxy, haloalkyl, haloalkoxy and alkoxyalkyl, or W represents a bidentate alkylene or alkylenedioxy group linking adjacent carbon atoms, X represents fluoroalkyl, and Y is selected from chlorine, bromine and alkoxy; and a process for preparing said ethers. The compounds of formula I are prepared by reacting a ketone of formula: ##STR2## with a phosphonium salt of formula Hal.sup.- (Q).sub.3 P.sup.+ -CH.sub.2 -Y, where Hal.sup.- represents a halide ion and Q represents alkyl or aryl.
该发明提供了一种新颖的芳基烯化合物,其
化学式为I,以及它们的制备方法和它们作为
杀虫剂化合物中间体的用途,包括,其中W代表1至4个取代基,选自卤素、烷基、烷氧基、卤代烷基、卤代烷氧基和烷氧基烷基,或W代表双齿烷基或烷基二氧基基团连接相邻碳原子,X代表氟烷基,Y选自
氯、
溴和烷氧基;以及制备所述醚的方法。化合物I的制备方法是通过将
化学式为的酮与
化学式为Hal.sup.-(Q).sub.3 P.sup.+ -CH.sub.2 -Y的膦盐反应得到,其中Hal.sup.-代表卤离子,Q代表烷基或芳基。