作者:Jeremy Robertson、Garry O'Connor、Donald S Middleton
DOI:10.1016/0040-4039(96)00559-x
日期:1996.5
Type II intramolecular carbonyl ene reactions of vinyl silanes 1, 4 and 5 are shown to generate methylene silacyclohexanols 3, 6 and 8 as the major products. (C) 1996 Elsevier Science Ltd
Stereoselective Synthesis of Silacyclohexanols by Silicon Tethered Type II Ene Cyclisation
作者:Jeremy Robertson、Garry O'Connor、Tsarina Sardharwala、Donald S. Middleton
DOI:10.1016/s0040-4020(00)00737-7
日期:2000.10
silane precursors for intramolecular ene reaction were prepared either by sequential organometallic substitution of appropriate silyl halides or by ring opening of oxasilacyclopentanes with 2-propenyllithium. The oxasilacyclopentane intermediates were prepared by free-radicalcyclisation, intramolecular hydrosilylation, or intramolecular Diels–Alder reaction. Treatment of the ene precursors with methylaluminium