Enantioselective Reductive Cyanation and Phosphonylation of Secondary Amides by Iridium and Chiral Thiourea Sequential Catalysis
作者:Dong‐Huang Chen、Wei‐Ting Sun、Cheng‐Jie Zhu、Guang‐Sheng Lu、Dong‐Ping Wu、Ai‐E Wang、Pei‐Qiang Huang
DOI:10.1002/anie.202015898
日期:2021.4.12
and phosphonylation of secondary amides have been accomplished for the first time for the synthesis of enantioenriched chiral α‐aminonitriles and α‐aminophosphonates. The protocol is highly efficient and enantioselective, providing a novel route to the synthesis of optically active α‐functionalized amines from the simple, readily available feedstocks. In addition, the reactions are scalable and the
过渡金属催化和有机催化的结合为化学家提供了实现各种前所未有的化学转化的机会。通过将铱与手性硫脲催化结合,首次实现了仲酰胺的直接对映选择性还原性氰化和膦酰化,以合成富含对映体的手性α-氨基腈和α-氨基膦酸酯。该方案高效且对映选择性良好,为从简单易得的原料合成旋光性α-官能化胺提供了一条新颖的途径。另外,反应是可扩展的,并且硫脲催化剂可以再循环和再利用。