Rearrangements of organosilicon compounds I. The migratory aptitudes of various organic groups in the aluminum chloride-catalyzed rearrangement of (chloromethyl)triorganosilanes
作者:Omar W. Steward、William J. Uhl、Bruce W. Sands
DOI:10.1016/s0022-328x(00)91311-1
日期:1968.12
The migratoryaptitudes of various organic groups in the aluminum chloride- catalyzed rearrangement of (chloromethyl)triorganosilanes have been determined: Me, 1.00; Et, 2.07; n-Pr, 2.97; iso-Pr, ⪡ 1.00;ClCH2, ⪡ 1.00. Migration of the organic group from silicon to carbon is facilitated by electron-release and inhibited, relative to methyl, by branching at the α-carbon. The migratoryaptitudes determined
Process for the preparation of lactic acid silyl esters
申请人:Bayer Aktiengesellschaft
公开号:US04568760A1
公开(公告)日:1986-02-04
Novel lactic acid silyl esters of the formula ##STR1## in which R represents alkyl or aryl, are obtained by a new process which comprises reacting a lactic acid of the formula ##STR2## with a chloromethylsilane of the formula ##STR3## in which R has the meaning indicated above, in the presence of a tertiary amine and, if appropriate, in the presence of an additional diluent, at temperatures between 50.degree. and 120.degree. C.