作者:R. C. Cookson、N. R. Rogers
DOI:10.1039/c39720000248
日期:——
The reaction of hexa-1,5-dien-3-ols with 2-methyl-1,1,3-triethoxybutane gives unsaturated aldehydes by a Claisen rearrangement which undergo two Cope rearrangements to give 2,5,9-unsaturated aldehydes; the reactions proceed with high stereospecificity when secondary hexa-1,5-dien-3-ols are used, resulting in the 2-trans-5-trans isomer.
六-1,5-二烯-3-醇与2-甲基-1,1,3-三乙氧基丁烷的反应通过克莱森重排得到不饱和醛,再经过两次Cope重排得到2,5,9-不饱和醛;当使用仲六-1,5-二烯-3-醇时,反应以高立体特异性进行,产生2-反式-5-反式异构体。