An Efficient and Environmentally Friendly Procedure for the Synthesis of Some Novel 8-Benzylidene-4-phenyl-3,4,5,6,7,8-hexahydro-1H-quinazolin-2-ones/thiones using Tetrabutylammonium Hexatungstate as a Reusable Heterogeneous Catalyst under Solvent-Free Conditions 


Vol. 34,  No. 11, pp. 3289-3294, Nov.  2013
10.5012/bkcs.2013.34.11.3289


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  Abstract

An efficient method for the preparation of 8-benzylidene-4-phenyl-3,4,5,6,7,8-hexahydro-1H-quinazolin-2- ones/thiones from the reaction of aromatic aldehydes with cyclohexanone and urea or thiourea in the presence of Tetrabutylammonium hexatungstate, [TBA]2[W6O19], as an efficient, inexpensive catalyst under thermal and solvent-free conditions has been developed. Good yields, short reaction times, straightforward workup, reusability of the catalyst, and green conditions are the most obvious advantages of this procedure.

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  Cite this article

[IEEE Style]

M. Ghashang, S. S. Mansoor, K. Aswin, "An Efficient and Environmentally Friendly Procedure for the Synthesis of Some Novel 8-Benzylidene-4-phenyl-3,4,5,6,7,8-hexahydro-1H-quinazolin-2-ones/thiones using Tetrabutylammonium Hexatungstate as a Reusable Heterogeneous Catalyst under Solvent-Free Conditions," Bulletin of the Korean Chemical Society, vol. 34, no. 11, pp. 3289-3294, 2013. DOI: 10.5012/bkcs.2013.34.11.3289.

[ACM Style]

Majid Ghashang, Syed Sheik Mansoor, and Krishnamoorthy Aswin. 2013. An Efficient and Environmentally Friendly Procedure for the Synthesis of Some Novel 8-Benzylidene-4-phenyl-3,4,5,6,7,8-hexahydro-1H-quinazolin-2-ones/thiones using Tetrabutylammonium Hexatungstate as a Reusable Heterogeneous Catalyst under Solvent-Free Conditions. Bulletin of the Korean Chemical Society, 34, 11, (2013), 3289-3294. DOI: 10.5012/bkcs.2013.34.11.3289.

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949