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消旋-顺,反2,2-二甲基-3-(2’,2’-二氯乙烯基)-环丙烷羧酸乙酯用乙醇钠醇溶液处理脱去一分子氯化氢生成的消旋-顺,反-2,2-二甲基-3-(2’-氯乙炔基)-环丙烷羧酸乙酯,再经皂化、酸化制得相应的羧酸.后者的钠盐分别和氯化对甲氧甲基苄基三乙铵及氯化3-苯氧基苄基三乙铵进行酯化制成一氯甲苄菊酯及一氯菊苯醚酯(Ⅵ及Ⅶ).通过对家蝇成虫、淡色库蚊四龄孑??及雄性德国小蠊的药效比较,前一种新合成拟除虫菊酯比后者为优越.
Racemic-cis, trans-2,2-dimethyl-3- (2 ’, 2’-dichlorovinyl) -cyclopropanecarboxylic acid ethyl ester A racemic solution of one molecule of hydrogen chloride - cis, trans-2,2-dimethyl-3- (2’-chloroethynyl) -cyclopropanecarboxylic acid ethyl ester, followed by saponification and acidification to give the corresponding carboxylic acid sodium salt of the latter and Methoxymethylbenzyltriethylammonium chloride and 3-phenoxybenzyltriethylammonium chloride were esterified to form fenchloos and fenvalerate (VI and VII) by Compared to the efficacy of the 4th instar larvae of Culex pipiens pallens and German cockroaches, the former new pyrethroid synthetic pyrethroids was superior to the latter.