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The magnetic graphene oxide/NHC catalyzed aerobic direct amidation and cross-dehydrogenative coupling of aldehydes

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Abstract

In this paper, the synthesis of a novel imidazolium based N-heterocyclic carbene (NHC) containing imidazopyridine substitutes using a three-component reaction is described. This compound was immobilized on magnetic graphene oxide (GO) to make a heterogeneous catalyst for the direct aerobic amidation of benzaldehyde derivatives under solvent-free conditions, as well as the intra- and intermolecular cross dehydrogenative coupling of aldehydes. In addition, the catalytic activity of the NHC catalyst was homogeneously studied in the presence of Fe3O4 nanoparticles under the same conditions, and showed good activity with lower yields than the heterogeneous catalyst.

Graphical abstract: The magnetic graphene oxide/NHC catalyzed aerobic direct amidation and cross-dehydrogenative coupling of aldehydes

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Publication details

The article was received on 22 Aug 2019, accepted on 30 Sep 2019 and first published on 04 Oct 2019


Article type: Paper
DOI: 10.1039/C9NJ04343H
New J. Chem., 2019, Advance Article

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    The magnetic graphene oxide/NHC catalyzed aerobic direct amidation and cross-dehydrogenative coupling of aldehydes

    H. Sepahvand, E. Ghasemi, M. Sharbati, M. S. Mohammadi, M. Arshadi Pirlar and G. H. Shahverdizadeh, New J. Chem., 2019, Advance Article , DOI: 10.1039/C9NJ04343H

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