Highly Enantioselective Iridium-Catalyzed Hydrogenation of 2-Benzylquinolines and 2-Functionalized and 2,3-Disubstituted Quinolines
作者:Da-Wei Wang、Xiao-Bing Wang、Duo-Sheng Wang、Sheng-Mei Lu、Yong-Gui Zhou、Yu-Xue Li
DOI:10.1021/jo900073z
日期:2009.4.3
The enantioselectivehydrogenation of 2-benzylquinolines and 2-functionalized and 2,3-disubstituted quinolines was developed by using the [Ir(COD)Cl]2/bisphosphine/I2 system with up to 96% ee. Moreover, mechanistic studies revealed the hydrogenation mechanism of quinoline involves a 1,4-hydride addition, isomerization, and 1,2-hydride addition, and the catalytic active species may be a Ir(III) complex
通过使用[Ir(COD)Cl] 2 /双膦/ I 2体系(ee高达96%)开发了2-苄基喹啉和2-官能化和2,3-二取代喹啉的对映选择性氢化。而且,机理研究表明,喹啉的氢化机理涉及1,4-氢化物的加成,异构化和1,2-氢化物的加成,并且催化活性物质可以是与氯化物和碘化物的Ir(III)络合物。