Results 1 to 10 of about 23,008 (222)

Nucleophilic Aromatic Substitution of Polyfluoroarene to Access Highly Functionalized 10-Phenylphenothiazine Derivatives [PDF]

open access: yesMolecules, 2021
Nucleophilic aromatic substitution (SNAr) reactions can provide metal-free access to synthesize monosubstituted aromatic compounds. We developed efficient SNAr conditions for p-selective substitution of polyfluoroarenes with phenothiazine in the presence
Kotaro Kikushima   +3 more
doaj   +4 more sources

A Greener and Efficient Method for Nucleophilic Aromatic Substitution of Nitrogen-Containing Fused Heterocycles [PDF]

open access: yesMolecules, 2018
A simple and efficient methodology for the nucleophilic aromatic substitution of nitrogen-containing fused heterocycles with interesting biological activities has been developed in an environmentally sound manner using polyethylene glycol (PEG-400) as ...
Joana F. Campos   +3 more
doaj   +4 more sources

Concerted Nucleophilic Aromatic Substitution Reactions [PDF]

open access: yesAngewandte Chemie - International Edition, 2019
AbstractRecent developments in experimental and computational chemistry have identified a rapidly growing class of nucleophilic aromatic substitutions that proceed by concerted (cSNAr) rather than classical, two‐step, SNAr mechanisms. Whereas traditional SNAr reactions require substantial activation of the aromatic ring by electron‐withdrawing ...
Darren L Poole   +2 more
exaly   +8 more sources

Tuning Covalent Organic Frameworks via Nucleophilic Aromatic Substitution [PDF]

open access: yesSmall Science
A family of covalent organic frameworks (COFs) with tuned properties has been prepared through nucleophilic aromatic substitution (SNAr) from a fluorinated imine‐linked COF (COF‐F).
Óscar González‐Rosell   +8 more
doaj   +2 more sources

Iterative Exponential Growth of Oxygen-Linked Aromatic Polymers Driven by Nucleophilic Aromatic Substitution Reactions [PDF]

open access: yesFrontiers in Chemistry, 2021
This work presents the first transition metal-free synthesis of oxygen-linked aromatic polymers by integrating iterative exponential polymer growth (IEG) with nucleophilic aromatic substitution (SNAr) reactions.
Tyler J. Jaynes   +10 more
doaj   +2 more sources

Synthesis and nucleophilic aromatic substitution of 3-fluoro-5-nitro-1-(pentafluorosulfanyl)benzene [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2016
3-Fluoro-5-nitro-1-(pentafluorosulfanyl)benzene was prepared by three different ways: as a byproduct of direct fluorination of 1,2-bis(3-nitrophenyl)disulfane, by direct fluorination of 4-nitro-1-(pentafluorosulfanyl)benzene, and by fluorodenitration of ...
Javier Ajenjo   +3 more
doaj   +2 more sources

A Simple Synthetic Route to Methyl 3-Fluoropyridine-4-carboxylate by Nucleophilic Aromatic Substitution

open access: yesMolecules, 2006
The nitro group of methyl 3-nitropyridine-4-carboxylate (1) has successfully been replaced by fluoride anion via nucleophilic aromatic substitution to give the 3-fluoro- pyridine-4-carboxylate 2.
Anne Fiksdahl, Freddy Tjosaas
doaj   +3 more sources

A new platform for the synthesis of diketopyrrolopyrrole derivatives via nucleophilic aromatic substitution reactions [PDF]

open access: yesBeilstein Journal of Organic Chemistry
Diketopyrrolopyrroles (DPPs) are a versatile group of dyes and pigments with valuable optoelectronic properties. In this work we report the synthesis of highly fluorescent DPP derivatives through straightforward nucleophilic aromatic substitution ...
Vitor A. S. Almodovar, Augusto C. Tomé
doaj   +2 more sources

Transetherification of 2,4-dimethoxynitrobenzene by aromatic nucleophilic substitution. [PDF]

open access: yesPLoS ONE, 2017
In view of the few reports concerning aromatic nucleophilic substitution reactions featuring an alkoxy group as a leaving group, the aromatic nucleophilic substitution of 2,4-dimethoxynitrobenzene was investigated with a bulky t-butoxide nucleophile ...
Jiho Song   +7 more
doaj   +1 more source

Synthesis of 4-[(1H-Benzimidazol-2-yl)sulfanyl]benzaldehyde and 2-({4-[(1H-Benzimidazol-2-yl)sulfanyl]phenyl}methylidene)hydrazine-1-carbothioamide

open access: yesMolbank, 2021
Here we describe the preparation of 2-(4-((1H-benzo[d]imidazol-2-yl)thio)-benzylidene)-hydrazine-1-carbothioamide in two steps. In the first step, 1,3-dihydro-2H-1,3-benzimidazole-2-thione was reacted with 4-fluorobenzaldehyde in DMSO to get 4-[(1H ...
Mustafa Turki Ubeid   +2 more
doaj   +1 more source

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