Tuning the Chiral Environment of <i>C</i><sub>2</sub>-Symmetric Diene Ligands: Development of 3,7-Disubstituted Bicyclo[3.3.1]nona-2,6-dienes
作者:Ryo Shintani、Yoshitaka Ichikawa、Keishi Takatsu、Fu-Xue Chen、Tamio Hayashi
DOI:10.1021/jo802437h
日期:2009.1.16
analysis of bicyclo[3.3.1]nona-2,6-dienes, new C2-symmetric chiral diene ligands 1 based on 3,7-disubstituted bicyclo[3.3.1]nona-2,6-diene framework have been designed and synthesized. These chiral ligands readily bind to rhodium(I) and provide a different chiral environment from the existing chiral dienes. The rhodium complexes thus obtained act as effective catalysts for 1,4-addition of alkenyl-
通过对双环[3.3.1] nona-2,6-二烯的结构分析,基于3,7-二取代双环[3.3.1] nona-2,6-diene骨架的新的C 2对称手性二烯配体1具有设计和合成。这些手性配体易于与铑(I)结合并提供与现有手性二烯不同的手性环境。如此获得的铑配合物可作为烯基-和芳基硼酸的1,4-加成到各种α,β-不饱和酮上的有效催化剂,包括以前难以提供高对映选择性的几种组合。