Novel .beta.-fluoroacyl-.beta.-halogenovinyl alkyl ethers of the formula ##STR1## in which R.sup.1 is a fluorinated alkyl group having 1 to 9 carbon atoms, Hal is a halogen atom, and R.sup.2 is an alkyl group having 1 to 7 carbon atoms, useful as insecticide intermediates, are produced by reacting a .beta.-fluoroacylvinyl ether of the formula R.sup.1 --CO--CH.dbd.CH--OR.sup.2 (II) with a halogenating agent at a temperature of -70.degree. C. to +80.degree. C., to produce a halogenation product of the formula ##STR2## and dehydrohalogenating (III) at a temperature of -20.degree. C. to +100.degree. C.
式为##STR1##的新型.beta.-
氟酰基-.beta.-卤代
乙烯基烷醚,其中R.sup.1是具有1至9个碳原子的
氟化烷基,Hal是卤素原子,R.sup.2是具有1至7个碳原子的烷基,可用作
杀虫剂中间体。该化合物是通过将式为R.sup.1 --CO--CH.dbd.CH--OR.sup.2(II)的.beta.-
氟酰基
乙烯醚与卤化剂在-70℃至+80℃的温度下反应,生成式为##STR2##的卤代产物,然后在-20℃至+100℃的温度下进行脱卤反应(III)而制得的。