Stereoselective synthesis of (3R,4S/3S,4R)-(6E, 10Z)-3,4,7,11-tetramethyltrideca-6,10-dienal (faranal); the trail pheromone of the Pharaoh's ant
作者:Raymond Baker、David C. Billington、Neela Ekanayake
DOI:10.1039/c39810001234
日期:——
Recemic (3R, 4S/3S, 4R)-faranal, has been synthesised by a convergent, stereospecific route from (1E, 5Z)-1-iodo-2, 6-dimethylocta-1,5-diene in good overall yield; this synthesis employed the addition of alkylcopper complexes to terminal acetylenes to generate the two trisubstituted double bonds, and a Diels–Alder reaction to establish the relative configuration of the C-3, C-4 methyl groups.
通过(1 E,5 Z)-1- iodo-2,6-二甲基辛基-1,5-二烯(1 E,5 Z)-1-iodo-2的会聚立体定向途径合成残基(3 R,4 S / 3 S,4 R)-法呢总体产量高;该合成方法是在末端乙炔上添加烷基铜配合物以生成两个三取代的双键,并通过狄尔斯-阿尔德反应建立C -3,C -4甲基的相对构型。