Results 21 to 30 of about 81,920,088 (158)

Ball-Milling-Enabled Zn(OTf)2‑Catalyzed Friedel–Crafts Hydroxyalkylation of Imidazo[1,2‑a]pyridines and Indoles [PDF]

open access: yes, 2023
A facile and efficient synthetic method for the construction of C3-hydroxyalkylated imidazo[1,2-a]pyridines and indoles by a Zn(OTf)2-catalyzed Friedel–Crafts hydroxyalkylation of imidazo[1,2-a]pyridines and indoles with carbonyl compounds under ...
Sonam (8254197)   +4 more
core   +3 more sources

Electrochemical oxidative iodination of imidazo[1,2-a]pyridines using NaI as iodine source [PDF]

open access: yes, 2020
An electrochemical oxidative iodination of imidazo[1,2-a]pyridines is achieved in this study. This reaction utilizes NaI as an iodine source and a supporting electrolyte under metal-free and exogenous chemical oxidant-free reaction conditions.
Jin Wha Park (8366643)   +2 more
core   +1 more source

Imidazo[1,2-b]pyridazines. XII. Syntheses and Central Nervous System Activities of Some Substituted Imidazo[1,2-b]pyridazines and Related Imidazo[1,2-a]pyridines, Imidazo[1,2-a]pyrimidines and Imidazo[1,2-a]pyrazines [PDF]

open access: yes, 1992
Syntheses are reported for some 6-chloro(alkoxy,alkylthio and pheny1thio)-3-benzamidomethyl-(acetamidomethyl and methoxy)-2-arylimidazo[1,2-apyridines and some corresponding imidazo- [1,2- b]pyridazines, imidazo[1,2-a[pyrimidines and imidazo[l,2-a ...
SJ Ireland   +4 more
core   +1 more source

Vanadyl Acetylacetonate Catalyzed Methylenation of Imidazo[1,2-a]pyridines by Using Dimethylacetamide as a Methylene Source: Direct Access to Bis(imidazo[1,2-a]pyridin-3-yl)methanes [PDF]

open access: yes, 2016
An efficient protocol has been developed for the methylenation of imidazo[1,2-a]pyridines using dimethylacetamide (DMA) as methylene source in the presence of vanadyl acetylacetonate [VO(acac)2] as the catalyst and iodobenzene diacetate as the oxidant ...
Kaswan, Pinku   +3 more
core   +1 more source

A practical and versatile method for the C–H sulfenylation of imidazo[1,2-a]pyridines [PDF]

open access: yes, 2020
Imidazo[1,2-a]pyridines are an important class of heterocycles that are prevalent in many bioactive small molecules. We report the direct introduction of a broad selection of aromatic, heteroaromatic, or alkyl fragments connected by a thioether group ...
Harrity, J.P.A., Al-Saedy, M.A.E.
core   +1 more source

A Convenient Method for the Synthesis of Imidazo[1,2-a]pyridines with a New Approach [PDF]

open access: yes, 2017
A new approach for the efficient synthesis of imidazo[1,2-a]pyridines is described. The synthesis was carried out via the reaction of functionalized 2-aminopyridine that were formed through a three-component reaction and phenacyl bromide derivatives.
Mohammad Zolfigol   +3 more
core   +1 more source

Copper-Catalyzed One-Pot Synthesis of Chalcogen-Benzothiazoles/Imidazo[1,2-a]pyridines with Sulfur/Selenium Powder and Aryl Boronic Acids [PDF]

open access: yes, 2018
An efficient and convenient copper-catalyzed oxidative chalcogenation of benzothiazoles and imidazo[1,2-a]pyridines with sulfur/selenium powder and aryl boronic acids was developed.
Yong-Cheng Ma   +5 more
core   +1 more source

‐Glucosamine for the Preparation of Imidazo[1,5‐a]pyridines [PDF]

open access: yes, 2022
The targeted cleavage of the C−N bonds of alkyl primary amines in sustainable compounds of biomass according to a metal‐free pathway and the conjunction of nitrogen in the synthesis of imidazo[1,5‐a]pyridines are still highly challenging.
Simon, Martin   +15 more
core   +1 more source

Fluorescent Zinc(II) Complexes with a N,N,N‐Tridentate Ligand Based on the Bis(imidazo[1,5‐a]pyridine)methane Scaffold

open access: yesEuropean Journal of Inorganic Chemistry, EarlyView.
The coordination behavior of bis(imidazo[1,5‐a]pyridine)methane derivatives has been expanded through functionalization with a methylpyridine pendant arm, affording new tripodal N,N,N‐tridentate ligands. Upon coordination to zinc(II), the resulting (chiral) complexes retain the attractive luminescent properties of the ligand platform, displaying ...
Chiara Vola   +5 more
wiley   +1 more source

Synthesis of Imidazo[1,2-a]pyridines via Multicomponent GBBR Using α-isocyanoacetamides [PDF]

open access: yes, 2018
Six novel imidazo[1,2-a]pyridines were synthesized by Groebke–Blackburn–Bienaymé reactions (GBBRs) under eco-friendly conditions (10 mol% ammonium chloride catalyst in EtOH at room temperature) with moderate to good yields (76–44%) using 2-isocyano-1 ...
Alejandro Islas-Jácome   +2 more
core   +1 more source

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