Highly Enantioselective Synthesis of Indolines: Asymmetric Hydrogenation at Ambient Temperature and Pressure with Cationic Ruthenium Diamine Catalysts
作者:Zhusheng Yang、Fei Chen、Yanmei He、Nianfa Yang、Qing-Hua Fan
DOI:10.1002/anie.201607890
日期:2016.10.24
asymmetric hydrogenation of 1H‐indoles and 3H‐indoles at ambient temperature and pressure, catalyzed by chiral phosphine‐free cationic ruthenium complexes, has been developed. Excellent enantio‐ and diastereoselectivities (up to >99 % ee, >20:1 d.r.) were obtained for a wide range of indole derivatives, including unprotected 2‐substituted and 2,3‐disubstituted 1H‐indoles, as well as 2‐alkyl‐ and 2‐aryl‐substituted
已开发了在室温和压力下通过手性无膦膦阳离子钌络合物催化1 H吲哚和3 H吲哚的不对称氢化而高度合成对二氢吲哚的方法。优异的对映和非对映选择性(高达> 99%ee值,> 20:1,DR)被用于广泛的吲哚衍生物的获得,包括未受保护的2-取代和2,3-二取代的1个ħ -indoles,以及2-烷基和2-芳基取代的3 H-吲哚。