Intramolecular Substitution Reaction of Alkylidene-Lithium Carbenoids: Regioselective Synthesis of Indenes
作者:Hideyuki Yanagisawa、Kasei Miura、Mitsuru Kitamura、Koichi Narasaka、Kaori Ando
DOI:10.1002/1522-2675(200210)85:10<3130::aid-hlca3130>3.0.co;2-e
日期:2002.10
Intramolecular substitution reaction of geminal dibromo alkenes proceeds to afford indenes, dihydronaphthalenes, dihydrofurans, and dihydropyran via in situ generated lithium alkylidene carbenoids, which have a carbon or oxygen nucleophilic moiety. This reaction provides a regioselective method for the preparation of polysubstituted indenes.
偕二溴烯烃的分子内取代反应通过原位生成的具有碳或氧亲核部分的亚烷基亚烃基锂进行,得到茚、二氢萘、二氢呋喃和二氢吡喃。该反应为制备多取代茚提供了区域选择性方法。