A total synthesis of (±)-faranal, the true trail pheromone of Pharaoh's ant, Monomorium pharaonis
作者:David W. Knight、Bol Ojhara
DOI:10.1039/p19830000955
日期:——
honium salt (15). The ketone (4) was prepared in ‘one-pot’ and in a stereoselective manner using vinyl cuprate chemistry, while the relative stereochemistry of the two methyl substituents in the phosphonium salt (15) was established by using the Diels–Alder adduct (16) of buta-1,3-diene and maleic anhydride, which, after reduction and oxidative cleavage of the resulting cis-1,2-dimethylcyclohex-4-ene
法老王蚁的真实踪迹信息素的相对较短的总合成,(±)-法拉纳尔[(3 SR,4 RS)-(6 E,10 Z)-3,4,7,11-tetramethyltrideca-6,10-二分法(2)]。碳骨架是通过(Z)-6-甲基辛-5-烯-2-酮(4)和5-羧基戊基phosph盐(15)之间的维蒂希缩合组装而成的。酮(4)是使用乙烯基铜酸盐化学法以“一锅法”和立体选择性方式制备的,而by盐(15)中两个甲基取代基的相对立体化学是使用Diels–Alder加合物(16)建立的。 )中的1,3-丁二烯和顺丁烯二酸酐,经还原和氧化裂解后形成顺式-1,2-二甲基环己-4-烯(18),仅产生内消旋-3,4-二甲基己二酸(19);依次经过六个简单步骤将其转化为盐(15)。