Enantioselective Reductive Coupling of Acetylene to <i>N</i>-Arylsulfonyl Imines via Rhodium Catalyzed C−C Bond-Forming Hydrogenation: (<i>Z</i>)-Dienyl Allylic Amines
作者:Eduardas Skucas、Jong Rock Kong、Michael J. Krische
DOI:10.1021/ja0715896
日期:2007.6.13
The first highly enantioselective catalytic vinylation of aldimines to furnish allylic amines is reported. Exposure of aromatic and aliphatic N-arylsulfonyl aldimines 1a−12a to equal volumes of acetylene and hydrogen gas at 45 °C and ambient pressure in the presence of chirally modified cationic rhodium catalysts provides the (Z)-dienyl allylic amines 1b−12b in highly optically enriched form (93−98%