Chiral-Auxiliary-Mediated Asymmetric Synthesis of Tris-Heteroleptic Ruthenium Polypyridyl Complexes
作者:Lei Gong、Seann P. Mulcahy、Klaus Harms、Eric Meggers
DOI:10.1021/ja9031665
日期:2009.7.22
A strategy for the asymmetric synthesis of chiral-at-metal [Ru(pp)(pp')(pp'')](2+) complexes, where pp, pp', and pp'' are achiral 2,2'-bipyridines, is introduced. The method employs isopropyl-2-(2'-hydroxyphenyl)oxazolines as chiral auxiliaries, which serve in their deprotonated forms as strong bidentate ligands that provide excellent asymmetricinduction in the course of the coordination chemistry