Stereochemistry of an Ene Reaction Involving 1,7-Dienes; Bicyclo[3.3.1]nonanes from (3-Cyclohexenyl)diallylcarbinols
作者:Alan F. Thomas、Marina Lander-Schouwey
DOI:10.1002/hlca.19840670124
日期:1984.2.1
(3-Cyclohexenyl)diallylcarbinols undergo a thermal retro-ene reaction to give crotonylcyclohexenes at ca. 200°. A side-reaction is an ene reaction to give bicyclo[3.3.1]nonanes. These become the main products above 300°. The stereochemistry of 2-allyl-1,4,6-trimethylbicyclo[3.3.1]-6-none-2-ols and related compounds is discussed, and a case is described in which the allyl group is not freely rotating.
(3-环己烯基)二烯丙基碳醇进行热逆-烯反应,在约70℃下得到巴豆酰基环己烯。200°。副反应是烯反应生成双环[3.3.1]壬烷。这些成为300°以上的主要产品。讨论了2-烯丙基-1,4,6-三甲基双环[3.3.1] -6-无-2-醇和相关化合物的立体化学,并描述了烯丙基不自由旋转的情况。