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Reactive N-Protonated Isocyanate Species Stabilized by Bis(μ-hydroxo)divanadium(IV)-Substituted Polyoxometalate†

  1. Dr. Kazuhiro Uehara,
  2. Dr. Keisuke Fukaya,
  3. Prof. Dr. Noritaka Mizuno*

Article first published online: 26 JUN 2012

DOI: 10.1002/anie.201108205

Issue

Angewandte Chemie International Edition

Angewandte Chemie International Edition

Volume 51, Issue 31, pages 7715–7718, July 27, 2012

Additional Information

How to Cite

Uehara, K., Fukaya, K. and Mizuno, N. (2012), Reactive N-Protonated Isocyanate Species Stabilized by Bis(μ-hydroxo)divanadium(IV)-Substituted Polyoxometalate . Angew. Chem. Int. Ed., 51: 7715–7718. doi: 10.1002/anie.201108205

Author Information

  1. Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)

*Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)

  1. †

    We thank Prof. J. Shimoyama (The University of Tokyo) for magnetic susceptibility measurements and his valuable discussion. This work was supported by the global COE program (GCOE) “Chemistry Innovation through Cooperation of Science and Engineering”, the Ministry of Education, Culture, Science, Sports, and Technology of Japan (MEXT) (Japan), and the Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program)“ of the Japan Society for the Promotion of Science (JSPS).

Publication History

  1. Issue published online: 25 JUL 2012
  2. Article first published online: 26 JUN 2012
  3. Manuscript Revised: 17 APR 2012
  4. Manuscript Received: 22 NOV 2011

Funded by

  • Ministry of Education, Culture, Science, Sports, and Technology of Japan (MEXT)
  • Japan Society for the Promotion of Science (JSPS)

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Keywords:

  • cyclotrimerization;
  • intermediates;
  • isocyanates;
  • polyoxometalates;
  • protonation
Thumbnail image of graphical abstract

O- or N-protonated? The bis(μ-hydroxo)divanadium(IV)-substituted γ-Keggin-type polyoxometalate (see picture, left) (TBA)4[γ-SiVIV2W10O36(μ-OH)4] (TBA=tetra(n-butyl)ammonium) was synthesized and characterized by X-ray crystallography. Its reaction with phenyl isocyanate gave (TBA)4[γ-SiVIV2W10O38(μ-OH)2(PhNHCO)2], which contains two N-protonated phenyl isocyanate species and catalyzes the cyclotrimerization of phenyl isocyanate.

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