Zirconium mediated or catalysed highly stereoselective cyclization of 1,4,7-trienes
作者:Tamotsu Takahashi、Martin Kotora、Kayoko Kasai
DOI:10.1039/c39940002693
日期:——
Cyclization of 1,4,7-trienes, which are easily prepared by double allylation reaction of alkynes, proceeded in the presence of a stoichiometric or catalytic amount of zirconocene compounds to give only cis isomers (>98% stereoselectivity).
1,4,7-三烯的环化可通过炔烃的双烯丙基化反应轻松实现,在化学计量或催化量的锆茂化合物的存在下进行,仅生成顺式异构体(立体选择性>98%)。