Synthesis of Chiral Diarylmethylamides via Catalytic Asymmetric Aza-Michael Addition of Amides to <i>ortho</i>-Quinomethanes
作者:Suo-Suo Qi、Xiao-Ping Sun、Yan-Biao Sun、Jing-Jing Zhai、Yi-Feng Wang、Ming-Ming Chu、Dan-Qian Xu
DOI:10.1021/acs.joc.3c01976
日期:2024.1.19
Chiral diarylmethylamides are a privileged skeleton in many bioactive molecules. However, the enantioselective synthesis of such molecules remains a long-standing challenge in organic synthesis. Herein, we report a chiral bifunctional squaramide catalyzed asymmetric aza-Michael addition of amides to in situ generated ortho-quinomethanes, affording enantioenriched diarylmethylamides in good yields with
手性二芳基甲基酰胺是许多生物活性分子中的特殊骨架。然而,此类分子的对映选择性合成仍然是有机合成中长期存在的挑战。在此,我们报道了一种手性双功能方酰胺催化酰胺与原位生成的邻醌甲烷的不对称氮杂迈克尔加成,以良好的收率和优异的对映选择性提供对映体富集的二芳基甲基酰胺。这项工作不仅为二芳基甲基酰胺的构建提供了新的策略,而且代表了酰胺作为氮亲核试剂在不对称有机催化中的实用性。