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.
Graphical Abstract
Letters in Organic Chemistry
Title:Synthesis of New and Known Dicoumarols in Aqueous Media: A Green and Convenient Procedure Promoted by Titanium(IV) Oxide Nanoparticles
Volume: 11 Issue: 8
Author(s): Saeed Khodabakhshi, Mozhgan Shahamirian and Mojtaba Baghernejad
Affiliation:
Keywords: Titanium(IV) oxide nanoparticles, chemoselectivity, 3, 3'-(2-aryl-2-oxoethylidene)bis[4-hydroxycoumarin]s, catalysts, arylglyoxal.
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.
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Cite this article as:
Khodabakhshi Saeed, Shahamirian Mozhgan and Baghernejad Mojtaba, Synthesis of New and Known Dicoumarols in Aqueous Media: A Green and Convenient Procedure Promoted by Titanium(IV) Oxide Nanoparticles, Letters in Organic Chemistry 2014; 11 (8) . https://dx.doi.org/10.2174/157017861108140613162852
DOI https://dx.doi.org/10.2174/157017861108140613162852 |
Print ISSN 1570-1786 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6255 |
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