We present a new class of catalysts based on the combination of N,N'-diaryl(thio)ureas and weak silicon Lewis acids (e.g., SiCl(4)). Such silicon-(thio)urea catalysts effectively catalyze the stereospecific rearrangement of epoxides to quaternary carbaldehydes.
Pelter,A. et al., Journal of the Chemical Society. Perkin transactions I, 1976, p. 2419 - 2428
作者:Pelter,A. et al.
DOI:——
日期:——
[EN] PREPARATION OF SURFACTANTS VIA CROSS-METATHESIS<br/>[FR] PRÉPARATION DE TENSIOACTIFS PAR MÉTATHÈSE CROISÉE
申请人:MATERIA INC
公开号:WO2015126462A1
公开(公告)日:2015-08-27
The present invention relates to compositions comprising 2-phenyl linear alkene benzenes or 2-phenyl linear alkene benzene sulfonates or 2-phenyl linear alkylbenzenes or 2-phenyl linear alkylbenzene sulfonates; where the benzene ring is optionally substituted with one or more groups designated R *, where R * is defined herein and to methods for making the same. This invention also relates to compositions, methods of making, use of, and articles of manufacuture comprising 2-ethoxylated hydroxymethylphenyl linear alkyl benzenes or 2-propoxylated hydroxymethylphenyl linear alkyl benzenes.
作者:Radim Hrdina、Christian E. Müller、Raffael C. Wende、Katharina M. Lippert、Mario Benassi、Bernhard Spengler、Peter R. Schreiner
DOI:10.1021/ja110685k
日期:2011.5.25
We present a new class of catalysts based on the combination of N,N'-diaryl(thio)ureas and weak silicon Lewis acids (e.g., SiCl(4)). Such silicon-(thio)urea catalysts effectively catalyze the stereospecific rearrangement of epoxides to quaternary carbaldehydes.