Highly Enantioselective Direct Synthesis of Endocyclic Vicinal Diamines through Chiral Ru(diamine)-Catalyzed Hydrogenation of 2,2′-Bisquinoline Derivatives
作者:Wenpeng Ma、Jianwei Zhang、Cong Xu、Fei Chen、Yan-Mei He、Qing-Hua Fan
DOI:10.1002/anie.201608181
日期:2016.10.4
An asymmetric hydrogenation of 2,2′‐bisquinoline and bisquinoxaline derivatives, catalyzed by chiral cationic ruthenium diamine complexes, was developed. A broad range of chiral endocyclic vicinal diamines were obtained in high yields with excellent diastereo‐ and enantioselectivity (up to 93:7 dl/meso and >99 % ee). These chiral diamines could be easily transformed into a new class of chiral N‐heterocyclic
开发了由手性阳离子钌二胺络合物催化的2,2'-双喹啉和双喹喔啉衍生物的不对称氢化反应。以高收率获得了种类繁多的手性内环邻二胺,非对映体和对映体选择性高(高达93:7 dl / meso和> 99%ee)。这些手性二胺很容易转化为一类新的手性N-杂环卡宾(NHC),这很重要,但很难获得。