A General and Efficient Method for the Preparation of β-Enamino Ketones and Esters Catalyzed by Indium Tribromide
作者:Zhan-Hui Zhang、Liang Yin、Yong-Mei Wang
DOI:10.1002/adsc.200505268
日期:2006.1
A variety of β-enaminoketones and esters have been synthesized in high to exellent yields by reacting β-dicarbonyl compounds with amines in the presence of a catalytic amount of indiumtribromide. The reaction proceeds smoothly at room temperature in a short reaction time under solvent-free conditions.
Zinc Triflate Catalysed Synthesis of β-Enamino Ketones(Esters) under Solvent-Free Conditions
作者:Chengliang Feng、Shuguang Zhang、Jin Cai、Junqing Chen、Huayou Hu、Min Ji
DOI:10.3184/174751913x13787959859506
日期:2013.10
An efficient and mild procedure is described for the synthesis of a series of β-enaminoketones(esters) from 1,3-dicarbonyl compounds and aliphatic and aromatic amines using zinc triflate as the catalyst.
Solvent-free synthesis of β-enamino ketones and esters catalysed by recyclable iron(III) triflate
作者:Cheng-Liang Feng、Ning-Ning Chu、Shu-Guang Zhang、Jin Cai、Jun-Qing Chen、Hua-You Hu、Min Ji
DOI:10.2478/s11696-014-0544-8
日期:2014.1.1
A novel application of highly stable Fe(OTf)3 as an efficient catalyst for the synthesis of a variety of β-enaminoketones and esters under solvent-free conditions is described. Notably, this protocol of a “green synthesis”, which produced β-enaminoketones and esters by the reaction of a variety of β-dicarbonyl compounds and primary amines, exhibits attractive properties including high yields, short
Silica supported Fe(HSO4)3 as an efficient, heterogeneous and recyclable catalyst for synthesis of β-enaminones and β-enamino esters
作者:Hossein Eshghi、Seyed Mohammad Seyedi、Elham Safaei、Mohammad Vakili、Abolghasem Farhadipour、Mohtaram Bayat-Mokhtari
DOI:10.1016/j.molcata.2012.07.021
日期:2012.11
the one-pot reaction of β-dicarbonyl compounds with various amines in the presence of silica ferric hydrogensulfate under solvent free conditions at room temperature. The reactions proceed smoothly in excellent yield, high chemoselectivity and with an easy work-up. Catalytic amount of Fe(HSO4)3·SiO2 catalyzed one-pot reaction of linear and cyclic β-diketones and β-ketoesters with aromatic and aliphatic
A general and efficient method for synthesis of enaminones and enamino esters catalyzed by NbCl5 under solvent-free conditions
作者:Yu-Heng Liu、Ping Wang、Gui-Tian Cheng
DOI:10.1007/s00706-012-0783-8
日期:2013.2
synthesis of β-enaminones and β-enamino esters by reacting 1,3-dicarbonyl compounds with amines in the presence of catalytic amounts of niobium pentachloride. The reaction proceeds smoothly at room temperature under solvent-free conditions and leads to chemo- and regioselective formation of enamine derivatives in high to excellent yields. Graphical Abstract