Anti-selective and regioselective aldol addition of ketones with aldehydes using MgI2 as promoter
作者:Han-Xun Wei、Richard L. Jasoni、Huawu Shao、Jiali Hu、Paul W. Paré
DOI:10.1016/j.tet.2004.09.098
日期:2004.12
The firstexample of a direct aldehyde–ketone coupling using the secondary amine piperidine as base in the presence of MgI2 to generate high selectivity of anti-aldol products from unmodified ethyl ketones in high yield is reported. The coupling reactions were carried out in a one-pot reaction by mixing four reaction components at room temperature. In the case of unsymmetrical ketones, addition was