One Step Selective Counterion Dependent Formation of Conjugated Chiral N-Sulfinylimines from Aldehydes
作者:Jeffrey R. Groch、Nicholas R. Lauta、Jon T. Njardarson
DOI:10.1021/acs.orglett.2c04102
日期:2023.1.20
We report a detailed study on the synthesis and aldehyde vinylogation applications of chiral N-sulfinyl imine phosphonate reagents. Two complementary scalable reagent routes, from trialkyl phosphites and methyl phosphonates, respectively, are presented. This reagent class enables significant streamlining in synthesis of conjugated Ellman imines from aldehydes, which can now be accomplished in a single
我们报告了关于手性 N-亚磺酰亚胺膦酸酯试剂的合成和醛乙烯基化应用的详细研究。介绍了两种互补的可扩展试剂路线,分别来自亚磷酸三烷基酯和膦酸甲酯。该试剂类别可显着简化从醛类合成共轭埃尔曼亚胺的过程,与更经典的基于氧化还原的四步法相比,现在只需一步即可完成。醛乙烯化优化揭示了显着的抗衡离子效应和意想不到的竞争反应挑战,需要解决这些挑战才能实现高产率。