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Helical Poly(quinoxaline‐2,3‐diyl)s Bearing Metal‐Binding Sites as Polymer‐Based Chiral Ligands for Asymmetric Catalysis
Author(s) -
Yamamoto Takeshi,
Suginome Michinori
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200803719
Subject(s) - hydrosilylation , quinoxaline , chemistry , catalysis , polymer chemistry , metal , polymer , enantioselective synthesis , polymerization , stereochemistry , organic chemistry
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 1000.