A simple protocol for the preparation of β-enamino ketones catalyzed by NbOPO4 under solvent free conditions
作者:Felipe Wodtke、Fernando R. Xavier、Samuel R. Mendes、Alfredo R.M. de Oliveira、Rogério A. Gariani
DOI:10.1016/j.tetlet.2016.12.019
日期:2017.1
A novel application of the highly stable niobium oxide phosphate (NbOPO4) as an efficient catalyst for the synthesis of beta-enamino ketones under solvent-free conditions is described. This protocol, exhibits attractive yields, short reaction periods, lower loading of catalyst and high chemoselectivity. (C) 2016 Elsevier Ltd. All rights reserved.
A mild method for the synthesis of β-enaminones and β-enamino esters using KH<sub>2</sub>PO<sub>4</sub> as catalyst
作者:Feng Xu、Hong-Xia Lv、Jin-Ping Wang、You-Ping Tian、Jian-Jun Wang
DOI:10.3184/030823408x382117
日期:2008.12
β-Enaminones and β-enamino esters have been produced by the direct condensation of amines with β-diketones and β-ketoesters using KH2PO4 as catalyst under mild, solvent-free conditions.