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Magnetic nanoparticles-supported DABCO tribromide: a versatile nanocatalyst for the synthesis of quinazolinones and benzimidazoles and protection/deprotection of hydroxyl groups

Abstract

1,4-diazabicyclo[2.2.2] octane tribromide supported on the magnetic nanoparticle Fe3O4 (DABCO tribromide@MNPs) as a novel heterogeneous tribromide type compound was found to be efficient and reusable nanocatalyst for one-pot synthesis of 2-arylquinazolin-4(3H)-ones and 2-aryl-1H-benzo[d]imidazoles via oxidative cyclization of aldehydes with 2-aminobenzamides and 1,2-phenylenediamine, respectively. Also, DABCO tribromide@MNPs catalyzed trimethylsilylation/tetrahydropyranylation and desilylattion/depyranylation of a wide variety of alcohols and phenols by changing the solvent medium at room temperature.

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Publication details

The article was received on 09 Feb 2017, accepted on 11 Jul 2017 and first published on 12 Jul 2017


Article type: Paper
DOI: 10.1039/C7NJ00479F
Citation: New J. Chem., 2017, Accepted Manuscript
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    Magnetic nanoparticles-supported DABCO tribromide: a versatile nanocatalyst for the synthesis of quinazolinones and benzimidazoles and protection/deprotection of hydroxyl groups

    A. rostami, O. Pourshiani, Y. Navasi, N. Darvishi and S. Saadati, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ00479F

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