Novel Easily Recyclable Bifunctional Phosphonic Acid Carrying Tripeptides for the Stereoselective Michael Addition of Aldehydes with Nitroalkenes
作者:Margery Cortes-Clerget、Olivier Gager、Maelle Monteil、Jean-Luc Pirat、Evelyne Migianu-Griffoni、Julia Deschamp、Marc Lecouvey
DOI:10.1002/adsc.201500794
日期:2016.1.7
A novel bifunctional organocatalyst library combining both aminocatalysis and phosphonic acid activation was used for the first time as an efficient tool for the stereoselective Michael addition of aldehydes with several aromatic nitroalkenes with good selectivities up to 95:5 dr and 93:7 er. Due to their high water solubility, the catalysts were easily recyclable and could be reused over several cycles
首次将结合了氨基催化和膦酸活化的新型双功能有机催化剂库作为有效的工具,用于醛与几种芳香族硝基烯烃的立体选择性迈克尔加成反应,选择性高达95:5 dr和93:7 er。由于它们的高水溶性,这些催化剂易于回收利用,并且可以在多个循环中重复使用,而没有任何明显的选择性损失。