Helical Poly(quinoxaline-2,3-diyl)s Bearing Metal-Binding Sites as Polymer-Based Chiral Ligands for Asymmetric Catalysis
作者:Takeshi Yamamoto、Michinori Suginome
DOI:10.1002/anie.200803719
日期:2009.1.5
Living it up: Helical polyquinoxalines with single and multiple metal‐binding sites, prepared by living polymerization of o‐diisocyanobenzenes, are used in the asymmetric hydrosilylation of styrenes, resulting in comparable enantioselectivities to those obtained by low‐molecular‐weight catalyst systems (up to 87 % ee, stereochemistry was determined by a chiral initiator) and a turnover number of almost