A highly negatively charged γ-Keggin germanodecatungstate efficient for Knoevenagel condensation

Kosei Sugahara; Toshihiro Kimura; Keigo Kamata; Kazuya Yamaguchi; Noritaka Mizuno

doi:10.1039/c2cc33839d

A highly negatively charged γ-Keggin germanodecatungstate efficient for Knoevenagel condensation

Chem Commun (Camb). 2012 Aug 28;48(67):8422-4. doi: 10.1039/c2cc33839d. Epub 2012 Jul 13.

Authors

Kosei Sugahara¹, Toshihiro Kimura, Keigo Kamata, Kazuya Yamaguchi, Noritaka Mizuno

Affiliation

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

PMID: 22790486
DOI: 10.1039/c2cc33839d

Abstract

A tetra-n-butylammonium (TBA) salt of a γ-Keggin -6-charged germanodecatungstate, [γ-H(2)GeW(10)O(36)](6-) (I), could act as an efficient homogeneous catalyst for Knoevenagel condensation of active methylene compounds with carbonyl compounds.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Catalysis
Germanium / chemistry*
Methylene Chloride / chemistry*
Models, Molecular
Molecular Structure
Quaternary Ammonium Compounds / chemistry*
Tungsten Compounds / chemistry*

Substances

Quaternary Ammonium Compounds
Tungsten Compounds
gamma-keggin-6-charged germanodecatungstate
Germanium
Methylene Chloride
tetrabutylammonium