Communication

C3-Symmetric Lanthanide Tris(alkoxide) Complexes Formed by Preferential Complexation and Their Stereoselective Polymerization of rac-Lactide†

  1. Polly L. Arnold Dr.1,
  2. Jean-Charles Buffet1,
  3. Robert P. Blaudeck2,
  4. Slawomir Sujecki Dr.2,
  5. Alexander J. Blake Prof.2,
  6. Claire Wilson Dr.3

Article first published online: 22 JUL 2008

DOI: 10.1002/anie.200801279

Issue

Angewandte Chemie International Edition

Angewandte Chemie International Edition

Volume 47, Issue 32, pages 6033–6036, July 28, 2008

Additional Information

How to Cite

Arnold, P., Buffet, J.-C., Blaudeck, R., Sujecki, S., Blake, A. and Wilson, C. (2008), C3-Symmetric Lanthanide Tris(alkoxide) Complexes Formed by Preferential Complexation and Their Stereoselective Polymerization of rac-Lactide. Angewandte Chemie International Edition, 47: 6033–6036. doi: 10.1002/anie.200801279

Author Information

  1. 1

    School of Chemistry, Joseph Black Building, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ (UK), Fax: (+44) 131-650-6453

  2. 2

    School of Chemistry, and of Electrical Engineering, University of Nottingham, Nottingham, NG7 2RD (UK)

  3. 3

    Rigaku Europe, Chaucer Business Park, Watery Lane, Sevenoaks, Kent TN15 6QY (UK)

  1. †

    We thank the Alexander von Humboldt Foundation, the Royal Society, the UK EPSRC, and the Universities of Edinburgh and Nottingham for financial support.

Publication History

  1. Issue published online: 22 JUL 2008
  2. Article first published online: 22 JUL 2008
  3. Manuscript Received: 17 MAR 2008

Funded by

  • Alexander von Humboldt Foundation
  • the Royal Society
  • UK EPSRC
  • Universities of Edinburgh and Nottingham

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Keywords:

  • homogeneous catalysis;
  • lactides;
  • lanthanides;
  • polymerization;
  • structure elucidation

Graphical Abstract

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Restoring order: YIII, EuIII, and ErIII tris(ligand) complexes of a new chiral alkoxide ligand, tBu2P(O)CH2CH(tBu)OH (HL), preferentially form as C3-symmetric diastereomers. Thus racemic HL affords (RRR)- and (SSS)-[LnL3] complexes, which are active catalysts for the stereoselective polymerization of rac-lactide to afford highly isotactic polylactic acid.

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