Sulfated titania catalyzed water mediated efficient synthesis of dicoumarols—a green approach |
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| Authors: | Bikash Karmakar Anupam NayakJulie Banerji |
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| Institution: | a Gobardanga Hindu College, Department of Chemistry, Khantura, North 24, Parganas 743273, India
b Centre of Advances Studies on Natural Products Including Organic Synthesis, Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India |
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| Abstract: | An efficient, mild, and environmental friendly method has been developed for the synthesis of dicoumarols in water over Lewis and Bronsted acid catalyst sulfated titania (TiO2/SO42−). The method involves the condensation of various aromatic and aliphatic aldehydes with 4-hydroxycoumarin. It affords the corresponding product in high yield with short reaction times employing a very low loading of catalyst. The catalyst was reused several times without significant change in activity. |
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| Keywords: | Dicoumarol Aldehydes Sulfated titania Aqueous medium Reusable |
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