申请人:Bayer Aktiengesellschaft
公开号:US04876393A1
公开(公告)日:1989-10-24
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.
公式为##STR1##的新型.beta.-氟酰基-.beta.-卤代乙烯基烷基醚,其中R.sup.1是具有1到9个碳原子的氟化烷基,Hal是卤素原子,R.sup.2是具有1到7个碳原子的烷基,可用作杀虫剂中间体。通过在温度为-70°C至+80°C下,将公式R.sup.1-CO-CH.dbd.CH-OR.sup.2(II)的.beta.-氟酰基乙烯醚与卤化剂反应,以产生公式##STR2##的卤化产物,然后在温度为-20°C至+100°C下进行脱卤反应(III)。