Natural Hydroxyapatite Ca5(PO4)3OH: An Efficient Catalyst for the Chemo- and Regioselective Enamination of the β-Ketoesters
Keywords:
Hydroxyapatite, Catalyst, Condensation, β-enaminoester, Solvent freeAbstract
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.Downloads
Published
2016-10-27
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