Results 11 to 20 of about 85,504 (285)

Selectively reductive amination of levulinic acid with aryl amines to N-substituted aryl pyrroles

open access: yesGreen Energy & Environment, 2023
Synthesizing nitrogen (N)-containing molecules from biomass derivatives is a new strategy for production of this kind of chemicals. Herein, for the first time we present the synthesis of N-substituted aryl pyrroles via reductive amination/cyclization of ...
Cailing Wu   +7 more
doaj   +1 more source

Diabetes mellitus is associated with elevated urinary pyrrole markers of γ-diketones known to cause axonal neuropathy

open access: yesBMJ Open Diabetes Research & Care, 2020
Introduction Progressive distal symmetrical axonal neuropathy, a complication of diabetes mellitus (DM), has an unknown cause. Normal physiological metabolism and diabetic dysmetabolism are associated with the generation of γ-diketones.
Wenting Feng   +3 more
doaj   +1 more source

Atom Economical Multi-Substituted Pyrrole Synthesis from Aziridine

open access: yesMolecules, 2022
Multi-substituted pyrroles are synthesized from regiospecific aziridine ring-opening and subsequent intramolecular cyclization with a carbonyl group at the γ-position in the presence of Lewis acid or protic acid.
Lingamurthy Macha   +3 more
doaj   +1 more source

Synthesis of Pyrroles Through the CuH-Catalyzed Coupling of Enynes and Nitriles.

open access: yesJournal of the American Chemical Society, 2020
Herein, we describe an efficient method to prepare polysubstituted pyrroles via a copper-hydride (CuH)-catalyzed enyne-nitrile coupling reaction. This protocol accommodates both aromatic and aliphatic substituents and a broad range of functional groups ...
Yujing Zhou   +4 more
semanticscholar   +1 more source

Strapped calix[4]pyrroles: from syntheses to applications.

open access: yesChemical Society Reviews, 2020
Supramolecular chemistry is a central topic in modern chemistry. It touches on many traditional disciplines, such as organic chemistry, inorganic chemistry, physical chemistry, materials chemistry, environmental chemistry, and biological chemistry ...
Sangshan Peng   +9 more
semanticscholar   +1 more source

Metal-Free Catalyzed Oxidation/Decarboxylative [3+2] Cycloaddition Sequences of 3-Formylchromones to Access Pyrroles with Anti-Cancer Activity

open access: yesMolecules, 2023
An efficient and direct approach to pyrroles was successfully developed by employing 3-formylchromones as decarboxylative coupling partners, and facilitated by microwave irradiation.
Xue Li   +6 more
doaj   +1 more source

Technology for the production of disubstituted pyrroles [PDF]

open access: yesE3S Web of Conferences, 2023
In this work, we studied the catalytic synthesis of pyrrole and their derivatives from ketoximes and acetylene in the liquid phase under normal conditions in the presence of homogeneous catalysts.
Safarov Megli Djumayevich
doaj   +1 more source

The synthesis of polyfluoroalkyl substituted pyrroles as building blocks for obtaining fluorinated pyrrolidine-containing alkaloids

open access: yesЖурнал органічної та фармацевтичної хімії, 2020
Aim. To study the synthetic potential of cyclization of N-(β-polyfluoroacyl)vinyl derivatives of proline and N-substituted glycines into polyfluoroalkyl pyrroles, which are useful intermediates to fluorinated pyrrolidine alkaloids.
Anton A. Klipkov   +3 more
doaj   +1 more source

Pyrrole-Pyridine and Pyrrole-Naphthyridine Hosts for Anion Recognition [PDF]

open access: yesMolecules, 2015
The association constants of the complexes formed by two hosts containing pyrrole, amide and azine (pyridine and 1,8-naphthyridine) groups and six guests, all monoanions (Cl−, CH3CO2−, NO3−, H2PO4−, BF4−, PF6−), have been determined using NMR titrations.
M. García   +7 more
openaire   +9 more sources

(E)-1-(3-Benzoyl-4-phenyl-1H-pyrrol-1-yl)-3-phenylprop-2-en-1-one

open access: yesMolbank, 2022
Over the last decade, there has been an increasing effort to fight inflammatory conditions establishing new multitarget approaches. Chronic inflammation is implicated in many multifactorial diseases, constituting a great economic burden and a chronic ...
Viola Noti, Dimitra Hadjipavlou-Litina
doaj   +1 more source

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