H5CoW12O40@nanosilica: a green, bifunctional, heterogeneous nanocatalyst for one-pot three-component Mannich reaction in water

H5CoW12O40@nanosilica: a green, bifunctional, heterogeneous nanocatalyst for one-pot... 12-Tungestocobaltic acid, H5CoW12O40, was immobilized on nanosilica from rice husk ash to produce H5CoW12O40@nanosilica as a bifunctional nanocatalyst. The TEM result showed that the particles are mostly spherical in shape, and that they have an average size of approximately 10 nm. The catalytic activity of this catalyst was investigated in Mannich reaction of various aldehydes, ketones, and amines in water. This rapid procedure afforded structurally diverse β-amino ketones in high to excellent yields. Short reaction time, simple work-up procedure, elimination of toxic solvents, and low catalyst loading are the advantages of this procedure. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

H5CoW12O40@nanosilica: a green, bifunctional, heterogeneous nanocatalyst for one-pot three-component Mannich reaction in water

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Publisher
Springer Netherlands
Copyright
Copyright © 2013 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-013-1392-9
Publisher site
See Article on Publisher Site

Abstract

12-Tungestocobaltic acid, H5CoW12O40, was immobilized on nanosilica from rice husk ash to produce H5CoW12O40@nanosilica as a bifunctional nanocatalyst. The TEM result showed that the particles are mostly spherical in shape, and that they have an average size of approximately 10 nm. The catalytic activity of this catalyst was investigated in Mannich reaction of various aldehydes, ketones, and amines in water. This rapid procedure afforded structurally diverse β-amino ketones in high to excellent yields. Short reaction time, simple work-up procedure, elimination of toxic solvents, and low catalyst loading are the advantages of this procedure.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Sep 24, 2013

References

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