不对称氢化
铑
对映选择合成
化学
芳香性
对称化
位阻效应
催化作用
动力学分辨率
不对称碳
Noyori不对称加氢
有机化学
分子
光学活性
作者
Yong‐Gui Zhou,Yuedi Ding,Zhou‐Hao Zhu,Mu‐Wang Chen,Chang‐Bin Yu
标识
DOI:10.1002/anie.202205623
摘要
Abstract Compared with heteroarenes, homogeneous asymmetric hydrogenation of all‐carbon aromatic rings is a longstanding challenge in organic synthesis due to the strong aromaticity and difficult enantioselective control. Herein, we report the rhodium/diphosphine‐catalyzed asymmetric hydrogenation of all‐carbon aromatic rings, affording a series of axially chiral cyclic compounds with high enantioselectivity through desymmetrization or kinetic resolution. In addition, the central‐chiral cyclic compounds were also obtained by asymmetric hydrogenation of phenanthrenes bearing a directing group. The key to success is the introduction of chiral diphosphine ligands with steric hindrance and strong electron‐donating properties. The axially chiral monophosphine ligands could be obtained by simple conversion of the hydrogenation products bearing the phosphine atom.
科研通智能强力驱动
Strongly Powered by AbleSci AI