A newsynthesis of benzo[1,2]oxasiloles is described, wherein an unprecedented intramolecular allylic transposition takes place probably involving a pentavalent silicon intermediate.
Proton addition to silylstyrenes: Overcoming the predilection for protiodesilylation
作者:Courtney Henry、Michael A. Brook
DOI:10.1016/s0040-4020(01)89280-2
日期:1994.1
allylsilanes undergo protiodesilylation reactions with protons. To favour additionreactions under these conditions, the ligands on silicon have been modified such that the leaving group ability and, simultaneously, the β-effect of the silyl group is reduced. In the case of allylsilanes, the use of dichlorosilyl groups does not significantly favour addition over substitution processes at the olefin
An Efficient Convergent Synthesis of Novel Anisotropic Adsorbates Based on Nanometer-Sized and Tripod-Shaped Oligophenylenes End-Capped with Triallylsilyl Groups
作者:Xiaobin Deng、Aurelie Mayeux、Chengzhi Cai
DOI:10.1021/jo0257750
日期:2002.7.1
This article describes an efficient and convergent synthesis of a novel tripod-shaped oligophenylene compound. The compound consists of three oligophenylene heptamers as the tripod legs and one bromophenyl group as the functional arm, joining at a tetrahedron silicon atom. Each tripod leg is end-capped with a triallylsilyl group for covalently anchoring the molecules on hydrogen-terminated silicon