56570-36-6Relevant academic research and scientific papers
Solvent-free synthesis of β-enamino ketones and esters catalysed by recyclable iron(III) triflate
Feng, Cheng-Liang,Chu, Ning-Ning,Zhang, Shu-Guang,Cai, Jin,Chen, Jun-Qing,Hu, Hua-You,Ji, Min
, p. 1097 - 1103 (2014/05/20)
A novel application of highly stable Fe(OTf)3 as an efficient catalyst for the synthesis of a variety of β-enamino ketones and esters under solvent-free conditions is described. Notably, this protocol of a "green synthesis", which produced β-enamino ketones and esters by the reaction of a variety of β-dicarbonyl compounds and primary amines, exhibits attractive properties including high yields, short reaction periods, lower loading of catalyst and chemo- and regio-selectivity. In addition, the catalyst was easily recovered from the reaction system and readily reused with minimal loss of activity.
Ferric nitrate nonahydrate as a mild and efficient catalyst for the synthesis of ss-enaminones
Khajuria, Rajni,Ambica,Saini, Yeshwinder,Kapoor, Kamal K.
, p. 1122 - 1127 (2014/10/15)
Ferric nitrate nonahydrate (Fe(NO3)3 -9H 2O) has been found to be an extremely mild and efficient catalyst for the preparation of ss-enaminones from ss-dicarbonyl compounds and amines (aliphatic amines, aromatic amines and
Formic acid: A low-cost, mild, ecofriendly, and highly efficient catalyst for the rapid synthesis of β-enaminones
Patil, Siddappa A.,Medina, Phillip A.,Gonzalez-Flores, Diego,Vohs, Jason K.,Dever, Seth,Pineda, Leslie W.,Montero, Mavis L.,Fahlman, Bradley D.
, p. 2349 - 2364 (2013/07/26)
β-Enaminones have been synthesized by the condensation reaction of b-diketones with various anilines in the presence of a catalytic amount of formic acid, mild and highly efficient acid catalyst in methanol. These condensation reactions proceed smoothly in short reaction times with near-quantitative yields. Copyright
Zinc triflate catalysed synthesis of β-enamino ketones(esters) under solvent-free conditions
Feng, Chengliang,Zhang, Shuguang,Cai, Jin,Chen, Junqing,Hu, Huayou,Ji, Min
, p. 626 - 629 (2013/11/06)
An efficient and mild procedure is described for the synthesis of a series of β-enamino ketones(esters) from 1,3-dicarbonyl compounds and aliphatic and aromatic amines using zinc triflate as the catalyst.
A general and efficient method for synthesis of enaminones and enamino esters catalyzed by NbCl5 under solvent-free conditions
Liu, Yu-Heng,Wang, Ping,Cheng, Gui-Tian
, p. 191 - 196 (2013/07/27)
A general and simple procedure was developed for the 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.
Silica supported Fe(HSO4)3 as an efficient, heterogeneous and recyclable catalyst for synthesis of β-enaminones and β-enamino esters
Eshghi, Hossein,Seyedi, Seyed Mohammad,Safaei, Elham,Vakili, Mohammad,Farhadipour, Abolghasem,Bayat-Mokhtari, Mohtaram
, p. 430 - 436 (2012/10/30)
A series of β-substituted enaminones were prepared through 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 smoothl
Approach to synthesis of Β-enamino ketones and pyrroles catalyzed by gallium(III) triflate under solvent-free conditions
Chen, Jiuxi,Yang, Xiaoliang,Liu, Miaochang,Wu, Huayue,Ding, Jinchang,Su, Weike
experimental part, p. 4180 - 4198 (2010/01/15)
Metal triflates have been used to catalyze synthesis of-enamino ketones or pyrroles from amines and 1,3-dicarbonyl or 1,4-dicarbonyl compounds under solvent-free conditions, respectively. Among different metal triflates screened, 0.5mol% Ga(OTf)3 efficiently promoted the reactions to give excellent yields. In addition, the catalyst could be recovered easily after the reactions and reused without evident loss in activity.
Room-temperature synthesis of pyrazoles, diazepines, β-enaminones, and β-enamino esters using silica-supported sulfuric acid as a reusable catalyst under solvent-free conditions
Chen, Xiang,She, Jin,Shang, Zhi-Cai,Wu, Jun,Zhang, Peizhi
experimental part, p. 947 - 957 (2009/09/06)
Silica-supported sulfuric acid (H2SO4·SiO2) has been utilized as a heterogeneous recyclable catalyst for a highly efficient regio- and chemoselective condensation of hydrazines/hydrazides, diamines, and primary amines with various β-dicarbonyl compounds at room temperature to afford pyrazoles, diazepines, and β-enaminones/β-enamino esters under solvent-free conditions within 5-15 min. Copyright Taylor & Francis Group, LLC.
Synthesis of pyrazoles, diazepines, enaminones, and enamino esters using 12-tungstophosphoric acid as a reusable catalyst in water
Chen, Xiang,She, Jin,Shang, Zhicai,Wu, Jun,Wu, Haifeng,Zhang, Peizhi
experimental part, p. 3478 - 3486 (2009/05/09)
12-Tungstophosphoric acid (H3PW12O40) is found to be an efficient and recyclable catalyst in promoting a chemo- and regioselective condensation of hydrazines/hydrazides, diamines, and primary amines with various 1,3-dicarbonyl compounds in pure water at room temperature to afford pyrazoles, diazepines, and enaminones/enamino esters, respectively, in high yields. Georg Thieme Verlag Stuttgart.
A mild method for the synthesis of β-enaminones and β-enamino esters using KH2P04 as catalyst
Xu, Feng,Lv, Hong-Xia,Wang, Jin-Ping,Tian, You-Ping,Wang, Jian-Jun
experimental part, p. 707 - 710 (2009/10/02)
β-Enaminones and β-enamino esters have been produced by the direct condensation of amines with β-diketones and β-ketoesters using KH2P04 as catalyst under mild, solvent-free conditions.
