Proline-Based <i>N</i>-Oxides as Readily Available and Modular Chiral Catalysts. Enantioselective Reactions of Allyltrichlorosilane with Aldehydes
作者:John F. Traverse、Yu Zhao、Amir H. Hoveyda、Marc L. Snapper
DOI:10.1021/ol050814q
日期:2005.7.1
as an effective catalyst for the reaction of allyltrichlorosilane with aryl and alpha,beta-unsaturated aldehydes at room temperature to afford the desired homoallylic alcohols in up to 92% ee. The chiral catalyst can be easily prepared from optically pure proline in three simple steps and 60% overall yield.