Highly efficient and facile synthesis of β-enaminones catalyzed by diphenylammonium triflate
作者:Ting-Ting Zhao、Jiang-Long Song、Feng-Qing Hong、Jian-Sheng Xia、Jian-Jun Li
DOI:10.1007/s11696-019-00838-2
日期:2019.11
The catalytic performance of diphenylammonium triflates as an organocatalyst in the synthesis of β-enaminones from various substituted β-diketones and amides (or amines) were evaluated. A wide range of β-enaminones were efficiently synthesized in good to excellent yields under mild reaction conditions. Applying diphenylammonium triflate (DPAT) as catalyst makes this protocol cost-effective, low corrosive and easy to handle.
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.
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
P<sub>2</sub>O<sub>5</sub>/SiO<sub>2</sub>as a New, Efficient, and Reusable Catalyst for Preparation of<font>β</font>-Enaminones Under Solvent-Free Conditions
作者:Mohammad R. Mohammadizadeh、A. Hasaninejad、M. Bahramzadeh、Z. Sardari Khanjarlou
DOI:10.1080/00397910802513052
日期:2009.3.10
P2O5/SiO2 (30%w/w) was applied as an efficient, heterogeneous, and reusable catalyst for the synthesis of -enaminones. The reactions were rapidly completed at 80C under solvent-free conditions and products were obtained in good to excellent yields.