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PROCESS FOR THE PREPARATION OF 2,2-DIMETHYL-3-ARYL-CYCLOPROPANE CARBOXYLIC ACIDS AND THEIR ESTERS, INTERMEDIATE PRODUCTS THEREFOR AND PROCESSES FOR THEIR PREPARATION
PROCESS FOR THE PREPARATION OF 2,2-DIMETHYL-3-ARYL-CYCLOPROPANE CARBOXYLIC ACIDS AND THEIR ESTERS, INTERMEDIATE PRODUCTS THEREFOR AND PROCESSES FOR THEIR PREPARATION
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机译:2,2-二甲基-3-芳基-环丙烷羧酸及其酯的制备方法,中间体及其制备方法
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摘要
2,2-Dimethyl-3-arylcyclopropanecarboxylic acids and esters, suitable as insecticide intermediates, of the formula IMAGE (I) in which Ar is naphthyl or substituted furyl, thienyl or phenyl, and R1 is hydrogen or alkyl, are produced by subjecting IMAGE (IV) to radical polymerization to produce IMAGE (III) reacting that with chlorine or bromine to produce IMAGE (II) and reacting that with an alkali metal or alkaline earth metal hydroxide or carbonate. Various intermediates II and III are new.
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