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. 2011 May 25;133(20):7624-7.
doi: 10.1021/ja110685k. Epub 2011 Apr 28.

Silicon-(thio)urea Lewis acid catalysis

Radim Hrdina  1 , Christian E Müller, Raffael C Wende, Katharina M Lippert, Mario Benassi, Bernhard Spengler, Peter R Schreiner
Affiliations

Silicon-(thio)urea Lewis acid catalysis

Radim Hrdina et al. J Am Chem Soc. .

Abstract

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.

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