100784-90-5Relevant academic research and scientific papers
One-pot synthesis of pyrrole-2-carboxylates and -carboxamides via an electrocyclization/oxidation sequence
Imbri, Dennis,Netz, Natalie,Kucukdisli, Murat,Kammer, Lisa Marie,Jung, Philipp,Kretzschmann, Annika,Opatz, Till
, p. 11750 - 11758 (2014)
An electrocyclic ring closure is the key step of an efficient one-pot method for the synthesis of pyrrole-2-carboxylates and -carboxamides from chalcones and glycine esters or amides. The 3,4-dihydro-2H-pyrrole intermediates generated in situ are oxidized
DBU-promoted tandem Michael-addition/cyclization for the synthesis of polysubstituted pyrroles
Yang, Tianyu,Wang, Ke-Hu,Huang, Danfeng,Li, Pengfei,Deng, Zhoubin,Su, Yinpeng,Hu, Yulai
, p. 2291 - 2297 (2019/03/06)
An efficient and transition-metal-free method for the synthesis of the structurally diversified pyrroles is described. Various α,β-unsaturated ynones reacted with N-substituted ethyl glycine ethyl ester hydrochlorides in the presence of DBU to form the co
A solvent-free synthesis of ethyl 3,5-diaryl-1H-pyrrole-2-carboxylates via triethylphosphite mediated reductive cyclization of ethyl 2-nitro-5-oxo-3,5- diarylpentanoates under microwave irradiation
Khajuria, Rajni,Saini, Yeshwinder,Kapoor, Kamal K.
, p. 5699 - 5702 (2013/09/24)
Ethyl 3,5-diaryl-1H-pyrrole-2-carboxylates have been synthesized in good yields from ethyl 2-nitro-5-oxo-3,5-diarylpentanoates by treatment with triethylphosphite under microwave irradiation. The integrity of the mechanism proposed has been augmented by
NEW HISTONE DEACETYLASE INHIBITORS BASED SIMULTANEOUSLY ON TRISUBSTITUTED 1H-PYRROLES AND AROMATIC AND HETEROAROMATIC SPACERS
-
Page/Page column 11, (2012/08/08)
The present invention refers to compounds derived from trisubstituted 1H-pyrrole rings and aromatic rings, which have the following formula (I): wherein: R1 and R2 represent, independently, an optionally substituted C6-Cs
NEW HISTONE DEACETYLASE INHIBITORS BASED SIMULTANEOUSLY ON TRISUBSTITUTED 1H-PYRROLES AND AROMATIC AND HETEROAROMATIC SPACERS
-
Page/Page column 24, (2011/04/25)
The present invention refers to compounds derived from trisubstituted 1H- pyrrole rings and aromatic rings, which have the following formula (I): wherein: R1 and R2 represent, independently, an optionally substituted C6-C
Formation of γ-oxoacids and 1 H-pyrrol-2(5 H)-ones from α,β-unsaturated ketones and ethyl nitroacetate
Aginagalde, Maialen,Bello, Tamara,Masdeu, Carme,Vara, Yosu,Arrieta, Ana,Cossio, Fernando P.
supporting information; experimental part, p. 7435 - 7438 (2010/12/25)
Michael addition of ethyl nitroacetate on α,β-unsaturated ketones followed by Nef oxidation under hydrolytic conditions yields γ-oxoacids instead of the corresponding α,δ-dioxoesters. A concerted decarboxylation step is proposed on the basis of computational results. Finally, conversion of the γ-ketoacids thus prepared into 1H-pyrrol-2(5H)-ones by reaction with primary amines under Paal-Knorr conditions is also reported.
A new synthesis of 3,5-diaryl-pyrrole-2-carboxylic acids and esters
Fejes, Imre,Toke, László,Blaskó, Gábor,Nyerges, Miklós,Siek Pak, Chwang
, p. 8545 - 8553 (2007/10/03)
A new two-step synthesis of pyrrole-2-carboxylic acids, steps via 1,3 dipolar cycloaddition of azomethine ylides to nitro-styrenes and oxidation of the resulting pyrrolidines with alkaline hydrogen peroxide is described. The oxidation of cycloadducts 3 by the means of MnO2 under different conditions also has been examined. (C) 2000 Elsevier Science Ltd.
The Synthesis and Chemistry of Azolenines. Part 4. Preparation and Rearrangement of some 3,5-Diaryl-2H-pyrrole-2,2-dicarboxylic Esters
Sammes, Michael P.,Chung, Margaret W. L.,Katritzky, Alan R.
, p. 1773 - 1780 (2007/10/02)
Oxidation of diethyl 3,5-diaryl-3,4-dihydro-2H-pyrrole-2,2-dicarboxylates (3) with chloranil in refluxing xylene gives not the 3,5-diaryl-2H-pyrrole-2,2-dicarboxylates (4) as reported by an earlier group, but instead the rearranged, isomeric, 1H-pyrrole-1,2-dicarboxylates (5). 2H-Pyrroles (4) may be obtained from the dihydropyrroles (3) using DDQ in benzene at room temperature; they rearrange to the isomers (5) in boiling xylene via an acyl -sigmatropic shift from carbon to nitrogen, a novel process in the 2H-pyrrole series.Thermal analyses indicate that the rearrangement is concerted with negligible charge separation in the transition state.Other novel 3,5-diaryl-1H-pyrrole-2-carboxylic acid derivatives are described.
