An Efficient Method for the Enamination of 1,3-Dicarbonyl Compounds with Ceric Ammonium Nitrate (CAN)
作者:Li-Ping Mo、Shu-Fen Liu、Wan-Zhi Li
DOI:10.1002/jccs.200700127
日期:2007.8
An efficient method for the enamination of 1,3-dicarbonylcompounds by employing ceric ammonium nitrate (CAN) as the catalyst has been described. A variety of β-amino-α,β-unsaturated ketones and esters have been synthesized in excellent yield within a short reaction time under solvent-free conditions.
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