3652-61-7Relevant academic research and scientific papers
Novel and highly efficient preparation of pyrroles using supported ionic liquid ILCF3SO3@SiO2 as a heterogeneous catalyst
Liu, Yang,Hu, Yu Lin
, p. 1033 - 1040 (2018/05/22)
Abstract: A supported ionic liquid ILCF3SO3@SiO2 was synthesized and used as a highly efficient catalyst in the Paal–Knorr reaction for the preparation of pyrroles. The heterogeneous catalyst could be easily recovered and recycled for five times without noticeable loss of catalytic activity. Also a possible reaction mechanism is provided.
Microwave radiation one-step synthesis of substituted pyrrole-3-carboxylic acid ester compound method
-
Paragraph 0044-0051, (2017/04/20)
The invention discloses a method for synthesizing a substituted pyrrole-3-formate compound by virtue of microwave radiation in one step, and relates to a synthetic method of the substituted pyrrole-3-formate compound. The method disclosed by the invention
Microwave-assisted one pot synthesis of N-substitued 2-methyl-1H-pyrrole-3-carboxylate derivatives without catalyst and solvent
Kan, Wei,Jing, Tao,Zhang, Xiao-Hong,Zheng, Yong-Jie,Chen, Lin,Zhao, Bing
, p. 2367 - 2376 (2016/03/01)
An efficient one-pot synthetic method for the N-substituted 2-methyl-1H-pyrrole-3-carboxylate derivatives has been accomplished via a microwave irradiation MCRs of various α-bromoacetophenone, amines, and ethyl acetoacetate without any solvent and catalys
Direct oxidative coupling of enamides and 1,3-dicarbonyl compounds: A facile and versatile approach to dihydrofurans, furans, pyrroles, and dicarbonyl enamides
Li, Pan,Zhao, Jingjing,Xia, Chungu,Li, Fuwei
, p. 5992 - 5995 (2015/01/08)
An efficient manganese(III)-mediated oxidative coupling reaction between α-aryl enamides and 1,3-dicarbonyl compounds has been developed. A series of dihydrofurans and dicarbonyl enamides were synthesized in moderate to good yields. Moreover, these dihydrofurans could be readily transformed into the corresponding furans and pyrroles via the Paal-Knorr reaction.
Copper-mediated cross-coupling-cyclization-oxidation: A one-pot reaction to construct polysubstituted pyrroles
Liu, Pei,Liu, Jin-Ling,Wang, Heng-Shan,Pan, Ying-Ming,Liang, Hong,Chen, Zhen-Feng
, p. 4795 - 4798 (2014/05/06)
A novel and efficient procedure for the synthesis of polysubstituted pyrroles has been developed in this work. The polysubsituted pyrroles were synthesized directly from terminal alkenes, amines and β-keto esters through cross-coupling-cyclization-oxidation in the presence of a catalytic amount of cuprous chloride. This method provides a one-pot synthesis route from terminal alkenes to polysubstituted pyrroles for the first time and opens a new area in cuprous catalysis. The Royal Society of Chemistry 2014.
One-pot four-component synthesis of highly substituted pyrroles in gluconic acid aqueous solution
Li, Bao-Le,Li, Pei-He,Fang, Xue-Na,Li, Chun-Xiao,Sun, Jing-Lei,Mo, Li-Ping,Zhang, Zhan-Hui
, p. 7011 - 7018 (2013/07/26)
Four-component coupling of amines, aldehydes, 1,3-dicarbonyl compounds, and nitromethane has been achieved in gluconic acid aqueous solution (GAAS) to produce polysubstituted pyrroles in high yield. Gluconic acid aqueous solution could be recycled and reu
Silver-mediated oxidative C-H/C-H functionalization: A strategy to construct polysubstituted furans
He, Chuan,Guo, Sheng,Ke, Jie,Hao, Jing,Xu, Huan,Chen, Hongyi,Lei, Aiwen
scheme or table, p. 5766 - 5769 (2012/05/07)
A novel silver-mediated highly selective oxidative C-H/C-H functionalization of 1,3-dicarbonyl compounds with terminal alkynes for the creation of polysubstituted furans and pyrroles in one step has been demonstrated. Promoted by the crucial silver specie
An efficient procedure for the synthesis of polysubstituted pyrroles in an ionic liquid
He, Yan-Hong,Wang, Gang-Qiang,Xu, Ke-Ling,Guan, Zhi
experimental part, p. 191 - 196 (2011/05/07)
The ionic liquid 1-butyl-3-methyl-imidazolium hydrogen sulfate, [bmim]HSO4, was used as a catalyst and reaction medium for the pyrrole synthesis, and a wide range of aliphatic, aromatic, heteroaromatic and carboxylic 1,4-diketones easily underwent condensations with aniline and ethylenediamine to form polysubstituted pyrroles. Sequential decarboxylation/Paal-Knorr pyrrole condensation was observed, which provides a new and facile approach to monoester pyrroles from 1,4-diketo-2,3-dicarboxylic acid esters.
N-substituted pyrrole synthesis by Paal-Knorr condensation using recyclable cationic exchange resin in water
He, Yan-Hong,Wang, Gang-Qiang,Guan, Zhi
experimental part, p. 486 - 489 (2010/06/19)
(Chemical Equation Presented) Cationic exchange resin has been utilized for the first time as a novel and recyclable heterogeneous catalyst for the synthesis of N-substituted pyrroles from variety of 1,4-diketones and aniline. This simple synthesis has been accomplished with excellent yields. The recovered catalyst can be reused for subsequent runs with only a gradual decrease in activity.
1,5-DIARYL-PYRROLE-3-CARBOXAMIDE DERIVATIVES AND THEIR USE AS CANNABINOID RECEPTOR MODULATORS
-
Page/Page column 17, (2008/06/13)
The present invention relates to a compound of formula (I) (A chemical formula should be inserted here - please see paper copy enclosed herewith) in which R1 and R2 independently represent phenyl, thienyl or pyridyl each of which is
