Enantioselective organocatalytic Michael addition of malonates to α,β-unsaturated aldehydes in water
作者:Anqi Ma、Shaolin Zhu、Dawei Ma
DOI:10.1016/j.tetlet.2008.03.051
日期:2008.5
The Michael addition of malonates to α,β-unsaturated aldehydes catalyzed by O-TMS protected diphenylprolinols and acetic acid in water occurs at 0 °C to rt. In most cases, the reaction runs to completion in less than 24 h. A wide range of aldehydes including β-aryl, β-alkyl and β-alkenyl acroleins are found to be compatible with these conditions, providing the corresponding adducts in good yields and
丙二酸酯在O -TMS保护的二苯基脯氨醇和水中的乙酸催化下,向α,β-不饱和醛中的迈克尔加成反应在0°C至rt的条件下进行。在大多数情况下,反应会在不到24小时的时间内完成。发现包括β-芳基,β-烷基和β-链烯基丙烯醛在内的多种醛均与这些条件相容,从而以高收率和良好至优异的对映选择性提供相应的加合物。