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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 34, Number 5
BKCSDE 34(5)
May 20, 2013

Title	A Fast, Highly Efficient and Green Protocol for One-Pot Synthesis of 2,4,5-Trisubstituted Imidazoles Catalyzed by [TBA]₂[W₆O₁₉] as a Reusable Heterogeneous Catalyst
Author	Mozhgan Ashrafi, Abolghasem Davoodnia* and Niloofar Tavakoli-Hoseini
Keywords	Heterogeneous catalysis, Solvent-free conditions, Tetrabutylammonium hexatungstate [TBA]₂[W₆O₁₉], 2,4,5-Trisubstituted imidazoles
Abstract	A simple and efficient synthesis of 2,4,5-trisubstituted imidazoles was achieved via a one-pot three-component cyclocondensation of benzil, aromatic aldehydes, and ammonium acetate in the presence of a catalytic amount of tetrabutylammonium hexatungstate [TBA]2[W6O19] as a heterogeneous catalyst under thermal solvent-free conditions. The key features of this methodology are operational simplicity, high yields, short reaction times, and a recyclable catalyst with a very easy work up.
Page	1508 - 1512
Full Text	PDF

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