Lewis Acid Catalyzed Ring-Opening Intramolecular Friedel−Crafts Alkylation of Methylenecyclopropane 1,1-Diesters
摘要:
The first Friedel-Crafts reaction initiated by the direct generation of a carbocation at the C3 position of MCP 1,1-diesters through distal-bond cleavage was presented. The described method supplied a new synthetic strategy to prepare indene and hydronaphthalene derivatives in moderate to excellent yields under mild conditions.
A<i>n</i>BuLi-Mediated, Expeditious and Stereoselective Ring-Opening Rearrangement of (Arylmethylene)cyclopropane-1,1-dicarboxylates
作者:Bao Hu、Linan Jiang、Jun Ren、Zhongwen Wang
DOI:10.1002/ejoc.200901165
日期:2010.3
We report herein an nBuLi-mediated, expeditious, ring-openingrearrangement of (arylmethylene)cyclopropane 1,1-diesters to prepare 1,3-diene derivatives with good stereoselectivity. The reaction mechanism has also been discussed.