Synthesis of New and Known Dicoumarols in Aqueous Media: A Green and Convenient Procedure Promoted by Titanium(IV) Oxide Nanoparticles

ISSN: 1875-6255 (Online)
ISSN: 1570-1786 (Print)


Volume 11, 10 Issues, 2014


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Letters in Organic Chemistry

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Editor-in-Chief:
Miguel Yus
Universidad de Alicante Apdo
Alicante
Spain


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Synthesis of New and Known Dicoumarols in Aqueous Media: A Green and Convenient Procedure Promoted by Titanium(IV) Oxide Nanoparticles

Author(s): Saeed Khodabakhshi, Mozhgan Shahamirian and Mojtaba Baghernejad

Affiliation: Young Researchers and Elite Club, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran.

Abstract

A simple and green method is reported for the completely chemoselective synthesis of some new dicoumarol derivatives {3,3'-(2-aryl-2-oxoethylidene)bis[4-hydroxycoumarin]s} from the reaction of 4-hydroxycoumarin with arylglyoxals in a molar ratio of 2:1 respectively. The reactions efficiently promoted by titanium(IV) oxide nanoparticles as a heterogeneous catalyst via an on water process. Catalyst loading is very low and it shows recyclability.




Keywords: Titanium(IV) oxide nanoparticles, chemoselectivity, 3, 3'-(2-aryl-2-oxoethylidene)bis[4-hydroxycoumarin]s, catalysts, arylglyoxal.

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Article Details

Volume: 11
Issue Number: 8
First Page: 596
Last Page: 600
Page Count: 5
DOI: 10.2174/157017861108140613162852
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