Results 61 to 70 of about 85,504 (285)
Synthesis of pi-conjugated systems bearing thiophene and pyrrole heterocycles through palladium catalyzed cross-coupling reactions. [PDF]
, 2016 A series of thienylpyrroles and bithienylpyrroles together with their formyl derivatives 5aed were synthesized using commercially or readily available coupling components, through three different palladium catalyzed cross-coupling reactions (Suzuki ...
Castro, M. +2 more
core +1 more source
Synthesis and Reactivity of New 1-Pentafluorophenyl-1Hpyrrole Derivatives
Molecules, 2003 We present 1-pentafluorophenyl-1H-pyrrole and some of its electrophilic substitution reactions: formylation and acetylations. The 2-substituted products formed in these reactions are selectively and in high yield converted into 3-substituted products by ...
Daniel Végh +1 more
doaj +1 more source
Molecules, 2022 An efficient method for the synthesis of pharmaceutically and high-tech prospective 2-(3-amino-2,4-dicyanophenyl)pyrroles (in up to 88% yield) via the reaction of easily available substituted acylethynylpyrroles with malononitrile has been developed. The
Maxim D. Gotsko +4 more
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Polar Diels-Alder Reactions using Heterocycles as Electrophiles. Influence of Microwave Irradiation [PDF]
, 2015 In this work we studied a series of polar Diels-Alder reactions using different heterocycles derivatives acting as electrophiles joint to dienes of different nucleophilicity, analyzing the effect of the microwave irradiation in these processes. We employ
Della Rosa, Claudia Daniela +3 more
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Diethyl pyrrole-2,5-dicarboxylate [PDF]
Molbank, 2020 The title compound was obtained in moderate yield by a new and unexpected base-induced ring contraction from a 1,4-thiazine precursor. Its X-ray structure showing hydrogen bonded dimers was compared with those of other crystallographically characterised 2-acylpyrroles.
R. Alan Aitken +3 more
openaire +4 more sources
Scientific Reports, 2023 Pyrroles are widely spread worldwide because of their critical applications, especially pharmacology. An expedition method for one-pot synthesis of N-substituted pyrrole derivatives has been presented by a reaction between 2,5-dimethoxytetrahydrofuran ...
Setareh Mousavi +3 more
doaj +1 more source
Detection of reactive oxygen and nitrogen species by electron paramagnetic resonance (EPR) technique [PDF]
, 2017 During the last decade there has been growing interest in physical-chemical oxidation processes and the behavior of free radicals in living systems. Radicals are known as intermediate species in a variety of biochemical reactions.
Gurer-Orhan, H., Saso, L., Suzen, S.
core +2 more sources
Molecules, 2022 A one-step, three-component reaction between α-hydroxyketones, oxoacetonitriles, and primary amines gives N-substituted 2,3,5-functionalized 3-cyanopyrroles with complete selectivity in up to 90% isolated yields.
Mengxin Xia +2 more
doaj +1 more source
Multicomponent reactions in PEG-400: ruthenium-catalyzed synthesis of substituted pyrroles [PDF]
, 2014 International audienceAn efficient and eco-friendly method for the synthesis of substituted pyrroles has been developed via ruthenium-catalyzed multicomponent reaction of ketone, amine, and ethylene glycol in PEG-400 as solvent medium without using any ...
Chandrasekhar, Srivari +4 more
core +3 more sources
Development of Novel Pyrrole Derivatives and Their Cinnamic Hybrids as Dual COX-2/LOX Inhibitors
Molecules, 2023 Molecular hybridization has emerged as a promising approach in the treatment of diseases exhibiting multifactorial etiology. With regard to this, dual cyclooxygenase-2/lipoxygenase (COX-2/LOX) inhibitors could be considered a safe alternative to ...
Viola Noti +2 more
doaj +1 more source