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Issue 11, 2013
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Gold nanoparticles assisted formation of cobalt species for intermolecular hydroaminomethylation and intramolecular cyclocarbonylation of olefins

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Abstract

The intermolecular hydroaminomethylation and the intramolecular cyclocarbonylation efficiently proceeded on cobalt oxide supported gold nanoparticles. The intermolecular reaction employing terminal olefins and N-isopropylaniline afforded hydroaminomethylated products as a mixture of regioisomers via a common reaction path consisting of hydroformylation, imine formation, and hydrogenation. In contrast, indolinone derivatives were exclusively obtained in the case of 2-alkenylanilines based on the intramolecular cyclocarbonylation mechanism. Both of these reactions were catalyzed by cobalt species derived from cobalt oxide. The active cobalt species were formed via reduction of the oxide support promoted by deposited gold nanoparticles. Characterization of the catalysts before and after the reaction was also performed.

Graphical abstract: Gold nanoparticles assisted formation of cobalt species for intermolecular hydroaminomethylation and intramolecular cyclocarbonylation of olefins

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Article information


Submitted
15 May 2013
Accepted
27 Jun 2013
First published
22 Jul 2013

Catal. Sci. Technol., 2013,3, 3000-3006
Article type
Paper

Gold nanoparticles assisted formation of cobalt species for intermolecular hydroaminomethylation and intramolecular cyclocarbonylation of olefins

X. Liu, A. Hamasaki, Y. Yamane, S. Aikawa, T. Ishida, M. Haruta and M. Tokunaga, Catal. Sci. Technol., 2013, 3, 3000
DOI: 10.1039/C3CY00336A

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