This work was supported by Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology (Japan) and the Ogasawara Foundation for the Promotion of Science and Engineering.
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Communication
Helical Poly(quinoxaline-2,3-diyl)s Bearing Metal-Binding Sites as Polymer-Based Chiral Ligands for Asymmetric Catalysis†
Article first published online: 15 DEC 2008
DOI: 10.1002/anie.200803719
Copyright © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Yamamoto, T. and Suginome, M. (2009), Helical Poly(quinoxaline-2,3-diyl)s Bearing Metal-Binding Sites as Polymer-Based Chiral Ligands for Asymmetric Catalysis. Angew. Chem. Int. Ed., 48: 539–542. doi: 10.1002/anie.200803719
- †
Publication History
- Issue published online: 29 DEC 2008
- Article first published online: 15 DEC 2008
- Manuscript Revised: 21 OCT 2008
- Manuscript Received: 30 JUL 2008
Funded by
- Ministry of Education, Culture, Sports, Science, and Technology (Japan)
- Ogasawara Foundation
Keywords:
- asymmetric catalysis;
- block copolymers;
- chiral ligands;
- helical structures;
- hydrosilylation
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.