Reaction of Olefins with Malonic Acid Derivatives in the Presence of Manganese(III) Acetate
作者:Noriyuki Fujimoto、Hiroshi Nishino、Kazu Kurosawa
DOI:10.1246/bcsj.59.3161
日期:1986.10
methylmalonic acid with mono- and disubstituted olefins in the presence of manganese(III) acetate yielded 2-carboxy-2-methyl-4-butanolides in moderate to good yields. The reactions of bromomalonic acid and chloromalonic acid with a variety of olefins gave 2-halo-4-butanolides and/or 2-buten-4-olides. The reaction of ethyl hydrogen malonate with olefins in the presence of manganese(III) acetate yielded
在乙酸锰 (III) 存在下,甲基丙二酸与单取代和双取代的烯烃反应以中等至良好的产率得到 2-羧基-2-甲基-4-丁内酯。溴丙二酸和氯丙二酸与多种烯烃反应生成 2-halo-4-butanolides 和/或 2-buten-4-olides。在乙酸锰 (III) 存在下,丙二酸氢乙酯与烯烃反应生成 2-ethoxycarbonyl-2-buten-4-olides、2-ethoxycarbonyl-2-ethenyl-4-butanolide、2,7-dioxaspiro[4.4]壬烷-1,6-二酮、2-乙氧基羰基-4-丁内酯和 3-丁烯酸乙酯。这些反应可以根据涉及取代的二羧甲基自由基的自由基机制来解释。