作者:Cornelis Moorhoff
DOI:10.1055/s-1997-707
日期:——
Condensations of methyl 4-(triphenylarsoranylidene)-2-butenoate 1a and conjugated carbonyl compounds give 1,3-cyclohexadiene-1-carboxylates and/or acyclic trienes in superior yields compared to the condensations with the phosphonium analogue 1b. However, the reaction of 1a and ethyl 2-cyano-5-methyl-2,4-hexadienoate 7 gave a mixture of two diastereomeric trans-bisvinylcyclopropanecarboxylates 9.
与与鏻类似物 1b 的缩合相比,4-(triphenylarsoranylidene)-2-丁烯酸甲酯 1a 和共轭羰基化合物的缩合以更高的产率得到 1,3-环己二烯-1-羧酸酯和/或无环三烯。然而,1a 和 2-氰基-5-甲基-2,4-己二烯酸乙酯 7 的反应得到了两种非对映异构反式双乙烯基环丙烷羧酸酯 9 的混合物。