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Chen, Dong‐Huang; Sun, Wei‐Ting; Zhu, Cheng‐Jie; Lu, Guang‐Sheng; Wu, Dong‐Ping; Wang, Ai‐E; Huang, Pei‐Qiang
Angewandte Chemie (International ed.), April 12, 2021, Letnik: 60, Številka: 16Journal Article
The combination of transition‐metal catalysis and organocatalysis increasingly offers chemists opportunities to realize diverse unprecedented chemical transformations. By combining iridium with chiral thiourea catalysis, direct enantioselective reductive cyanation 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 thiourea catalyst can be recycled and reused. The first enantioselective reductive cyanation and phosphonylation of secondary amides have been achieved by the combination of iridium with chiral thiourea catalysis. The protocol is highly efficient and enantioselective, providing a novel route for the synthesis of optically active α‐aminonitriles and α‐aminophosphonates from bench‐stable feedstocks.
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