We report the cycloisomerization of 1-alkenyl-1-alkynylcyclopropanes to cyclooctatriene products catalyzed by PtCl2/CO in hot xylene. In contrast to the reported enyne cycloisomerization, this 1,4-enyne cycloisomerization proceeds via an atypical addition of the allyl carbon to the alkyne in a 6-endo-dig cyclization.
我们报告了在热二
甲苯中由 PtCl2/CO 催化的 1-烯基-1-炔基
环丙烷到环辛
三烯产物的环异构化反应。与已报道的
炔烃环异构化不同,这种 1,4-
炔烃环异构化是通过烯丙基碳与
炔烃的非典型加成进行 6-endo-dig 环化的。