Silylene oxonium ylides: di-tert-butylsilylene insertion into C–O bonds
作者:Laura E. Bourque、Pamela A. Haile、Janice M.N. Loy、K.A. Woerpel
DOI:10.1016/j.tet.2009.04.016
日期:2009.7
Allylic ethers undergo insertions of silylenes into C-O bonds to form allylic silanes. Silylene insertion into C-O acetal bonds was also observed. Formation of silylene ylide intermediates led to [ 1,2]-Stevens rearrangement products as well as [2,3]-sigmatropic products depending upon the steric environment of the starting allylic ether. (C) 2009 Elsevier Ltd. All rights reserved.
Metal-Catalyzed Silylene Insertions of Allylic Ethers: Stereoselective Formation of Chiral Allylic Silanes
作者:Laura E. Bourque、Pamela A. Cleary、K. A. Woerpel
DOI:10.1021/ja073758s
日期:2007.10.1
Silylene insertion into allylicethers occurs suprafacially to provide enantioenriched allylic silanes and disilanes. Silylene insertion to a variety of protected allylic alcohols utilizing silver- and copper-mediated conditions proved to be a general method for allylic silane formation. Allylic disilanes reacted similarly to allylic silanes, undergoing both annulation and allylation reactions.