Synthesis of (Z)-trisubstituted olefins with all substituents different from methylvia α,β-disubstituted (E)-acroleins
作者:N. Ya. Grigor'eva、P. G. Tsiklauri、A. V. Buevich
DOI:10.1007/bf02495562
日期:1998.7
(E)-2,3-Disubstituted allyl bromides readily accessible in two steps from the corresponding enals react with dialkyl cuprates in a high regio- and stereoselective fashion to give (Z)-trisubstituted olefins with all substituents different from methyl. This reaction was used in the synthesis of benzyl 7-methyl-3-propyldeca-(2Z,6Z)-dienyl ether, a derivative of a component of the sex pheromone of the lesser apple worm Laspeyresia pomonella L.
(E)-2,3-双取代的乙烯基溴化物可以通过两步反应从对应的enal中获得,随后与二元化杯rates发生高区域和空间选择性的反应,可以得到所有取代基均不为甲基的 (Z)-三取代双缩合物。这种反应在合成二羟基丁二烯醚中得到了应用,这种物质是 lesser apple worm 蝌蚪性外激素中的一种成分,其中需要用到这种合成方法的产物是 benzyl 7-methyl-3-propyldeca-(2Z,6Z)-dienyl ether。