Abstract
1. The reactivities of alkenes in reactions with monocarboxylic anhydrides and acid chlorides, and acid chlorides of monoethyl esters of dicarboxylic acids in presence of metal halides depend substantially on the structures of the original alkenes. From a comparison of the reactions of 1-hexene and 2,3-dimethyl-2-butene with acetic anhydride and the acid chloride of monoethyl adipate it was shown that the branched alkene had the greater reactivity. 2. In their reactions with alkenes the reactivities of monocarboxylic anhydrides and acid chlorides and dicarboxylic acid chlorides also depend on the structures of the latter. The behavior of 2,3-dimethyl-2-butene with pivalic anhydride and the acid chlorides of the monoethyl esters of dimethyl- and diethyl-malonic acids indicates the inertness of the latter, which is determined by their highly branched structures. 3. In the reaction of a mixed anhydride with an alkene in presence of zinc chloride, the acyl group of the higher acid adds at the double bond with formation of the keto group of the product.
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