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Title
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Magnetic nanoparticle-supported DABCO tribromide: a versatile nanocatalyst for the synthesis of quinazolinones and benzimidazoles and protection/deprotection of hydroxyl groups
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Type
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JournalPaper
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Keywords
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magnetic Fe3O4 nanoparticles , Diazabicyclo[2.2.2]octane tribromide, 2-arylquinazolin-4(3H)-ones ,2-aryl-1H-benzo- [d]imidazoles , oxidative cyclization, 2-aminobenzamides, 1,2-phenylenediamine
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Abstract
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1,4-Diazabicyclo[2.2.2]octane tribromide supported on magnetic Fe3O4 nanoparticles (MNPs-DABCO tribromide) as a novel heterogeneous tribromide type compound was found to be an efficient and reusable nanocatalyst for the one-pot synthesis of 2-arylquinazolin-4(3H)-ones and 2-aryl-1H-benzo- [d]imidazoles through oxidative cyclization of aldehydes with 2-aminobenzamides and 1,2-phenylenediamine, respectively. Also, MNPs-DABCO tribromide catalyzed trimethylsilylation/tetrahydropyranylation and desilylation/depyranylation of a wide variety of alcohols and phenols through changing the solvent medium at room temperature.
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Researchers
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sadati shaghayegh (Fifth Researcher), Neda Darvishi (Fourth Researcher), Yahya Navasi (Third Researcher), Omid Pourshiani (Second Researcher), Amin Rostami (First Researcher)
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