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Natural Hydroxyapatite Ca5(PO4)3OH: An Efficient Catalyst for the Chemo- and Regioselective Enamination of the β-Ketoesters

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Title: Natural Hydroxyapatite Ca5(PO4)3OH: An Efficient Catalyst for the Chemo- and Regioselective Enamination of the β-Ketoesters

Authors: Abdelhadi Louroubi, Halima Ouahine, Brahim Boualy, Mustapha Ait Ali, Larbi El Firdoussi

Journal: Journal of advanced catalysis science and technology

HEC Recognition History
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Publisher: Cosmos Scholars Publishing House

Year: 2016

Volume: 3

Issue: 2

Language: en

Keywords: Catalysthydroxyapatitesolvent freecondensationβ-enaminoester

Categories
Catalysis (222) Solid State Chemistry (21) Organic Chemistry (862) Green Chemistry (86) Materials Science (8025)

Abstract

Hydroxylapatite or hydroxyapatite Ca5(PO4)3OH (Hap), a natural mineral species of the family of phosphate, efficiently catalyzed the condensation of 1,3-ketoesters with primary amines under solvent-free conditions. The reaction was complete in 10 min, to afford β-enamino esters in a high yield and good selectivity. Moreover, the catalyst can be re-used for four times with good activities.

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