Preparation method of internal olefin

The invention discloses a preparation method of internal olefin. The method comprises the following steps: by taking a cinnamic acid compound and a 4-alkyl-1,4-dihydropyridine compound as raw materials, carrying out an oxidative decarboxylation alkylation reaction in the presence of a copper catalyst and dicumyl peroxide (DCP) to construct a C (sp3)-C (sp2) bond, and preparing a series of internalolefins under mild conditions. The method has a wide substrate range and excellent functional group tolerance, uses cheap and stable cinnamic acid compounds to replace aryl halides, alkenyl halides and nitroolefin, and has the advantages of low price, wide raw material sources, mild reaction conditions, simple operation and huge application potential. 本发明公开了一种内烯烃的制备方法，该方法以肉桂酸类化合物与4-烷基-1,4-二氢吡啶类化合物为原料，在铜催化剂和过氧化二枯基(DCP)存在下，经氧化脱羧烷基化反应构建C(sp)-C(sp)键，在温和的条件下制备获得一系列内烯烃。本发明的方法具有广泛的底物范围和出色的官能团耐受性，并且通过使用廉价且稳定的肉桂酸类化合物代替芳基卤化物、烯基卤化物和硝基烯烃，价格便宜、原料来源广泛、反应条件温和、操作简便，具有巨大的应用潜力。