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A heterogenized cobaltate catalyst on bis-imidazolium-based covalent triazine framework for hydroesterification of epoxides

Abstract

Original Abstract A imidazolium-cobaltate-based heterogeneous catalyst exhibits advantages over its homogeneous counterpart in the synthesis of β-hydroxyesters from epoxides. However, leaching of cobaltate from the catalytic support decreases the selectivity and recyclability of the catalyst. To overcome such drawbacks, bis-imidazolium-based covalent triazine framework (CTF) is employed as a catalytic support for hydroesterification catalyst to reduce cobaltate leaching using the intramolecular anion stabilization effect of multi-imidazolium moiety. The synthesized heterogeneous catalyst [bis-imidazolium-CTF][Co(CO)4] demonstrates excellent selectivity for the β-hydroxyester and unprecedented recyclability. Revised abstract A imidazolium-cobaltate-based heterogeneous catalyst exhibits advantages over its homogeneous counterpart in the synthesis of β-hydroxyesters from epoxides. However, leaching of cobaltate from the catalytic support decreases the selectivity and recyclability of the catalyst. To overcome such drawbacks, bis-imidazolium-based covalent triazine framework (CTF) is employed as a catalytic support for hydroesterification catalyst to reduce cobaltate leaching using the intramolecular anion stabilization effect of multi-imidazolium moiety, resulting in excellent selectivity for the β-hydroxyester and unprecedented recyclability.

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Supplementary files

Publication details

The article was received on 10 May 2018, accepted on 12 Jun 2018 and first published on 13 Jun 2018


Article type: Paper
DOI: 10.1039/C8NJ02292E
Citation: New J. Chem., 2018, Accepted Manuscript
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    A heterogenized cobaltate catalyst on bis-imidazolium-based covalent triazine framework for hydroesterification of epoxides

    S. Rajendiran, G. H. Gunasekar and S. Yoon, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ02292E

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