Bicyclization of Enynes Using the Cp2TiCl2−Mg−BTC System: A Practical Method to Bicyclic Cyclopentenones
摘要:
Bicyclic titanacycles 2 generated with the Cp2TiCl2-Mg-P(OEt)(3) system can be trapped with bis(trichloromethyl) carbonate (BTC) to give bicyclic cyclopentenones 3 in good yields. The titanacycle 2m was isolated and well-identified. Bicyclization of enynes containing 1,2-disubstituted olefin by this method gave good results with excellent stereoselectivity.
Trapping bicyclic titanacyclopentenes with bis(trichloromethyl) carbonate (BTC): a new method to bicyclic cyclopentenones
作者:Zongbao Zhao、Yu Ding
DOI:10.1039/a708182k
日期:——
Bis(trichloromethyl) carbonate is found to trap bicyclic titanacyclopentenes providing a new method for bicyclization of enynes into bicycliccyclopentenones.
发现碳酸二(三氯甲基)酯可捕获双环钛环戊烯,这为将烯炔双环化为双环环戊烯酮提供了一种新方法。
US6174840B1
申请人:——
公开号:US6174840B1
公开(公告)日:2001-01-16
Bicyclization of Enynes Using the Cp<sub>2</sub>TiCl<sub>2</sub>−Mg−BTC System: A Practical Method to Bicyclic Cyclopentenones
作者:Zongbao Zhao、Yu Ding、Gang Zhao
DOI:10.1021/jo9810718
日期:1998.12.1
Bicyclic titanacycles 2 generated with the Cp2TiCl2-Mg-P(OEt)(3) system can be trapped with bis(trichloromethyl) carbonate (BTC) to give bicyclic cyclopentenones 3 in good yields. The titanacycle 2m was isolated and well-identified. Bicyclization of enynes containing 1,2-disubstituted olefin by this method gave good results with excellent stereoselectivity.
Clements, Carol J.; Dumoulin, Denis; Hamilton, David R., Journal of Chemical Research, Miniprint, 1998, # 10, p. 2658 - 2677
作者:Clements, Carol J.、Dumoulin, Denis、Hamilton, David R.、Hudecek, Milan、Kerr, William J.、et al.