Chiral self-dimerization of vanadium complexes on a SiO2 surface: the first heterogeneous catalyst for asymmetric 2-naphthol coupling

Mizuki Tada; Toshiaki Taniike; Lakshmi M. Kantam; Yasuhiro Iwasawa

doi:10.1039/B410307F

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Chiral self-dimerization of vanadium complexes on a SiO₂ surface: the first heterogeneous catalyst for asymmetric 2-naphthol coupling†

Mizuki Tada,^a Toshiaki Taniike,^a Lakshmi M. Kantam^a and Yasuhiro Iwasawa*^a

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* Corresponding authors

^a Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
E-mail: iwasawa@chem.s.u-tokyo.ac.jp
Fax: (+81)3-5800-6892

Abstract

The self-dimerized chiral assembly of vanadium–Schiff-base complexes was found to occur on a SiO₂ surface and to be the first heterogeneous catalyst for the asymmetric oxidative coupling of 2-naphthol with 100% selectivity and 90% enantioselectivity.

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Supplementary files

Fig. S1: V K-edge XANES spectra for the V precursor, the supported V catalyst and the supported V catalyst treated with 2-naphthol. Fig. S2: V K-edge EXAFS Fourier-transformed spectra for the V precursor, the supported V 3.4 wt% catalyst and the supported V catalyst treated with 2-naphthol. Table S1: Frequencies of vibration modes for the V precursors labeled with isotopes ( ¹³C and ¹⁵N) and the supported V catalyst (3.4 wt%) measured by FT-IR and calculated by DFT DOC (86K)

Article information

DOI: https://doi.org/10.1039/B410307F
Article type: Communication
Submitted: 08 Jul 2004
Accepted: 23 Aug 2004
First published: 04 Oct 2004

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Chem. Commun., 2004, 2542-2543

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Chiral self-dimerization of vanadium complexes on a SiO₂ surface: the first heterogeneous catalyst for asymmetric 2-naphthol coupling

M. Tada, T. Taniike, L. M. Kantam and Y. Iwasawa, Chem. Commun., 2004, 2542 DOI: 10.1039/B410307F

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