Diene−Titanium Complexes as Synthetic Intermediates for the Construction of Three- or Five-Membered Carbocycles
作者:Philippe Bertus、Christine Menant、Chloé Tanguy、Jan Szymoniak
DOI:10.1021/ol702917c
日期:2008.3.1
It has been shown that diene-titanium complexes exhibit substrate-dependent 1,2- or 1,4-dicarbanion reactivity. On this basis, 3-cyclopentenylamines and spiro-vinylcyclopropane lactams were easily prepared by using homoallylic Grignard reagents, Ti(O-i-Pr)(4), and nitriles or cyanoesters, respectively.