Results 171 to 180 of about 23,008 (222)

Dehalogenation of Aromatics by Nucleophilic Aromatic Substitution

Environmental Science & Technology, 2014
Nucleophilic aromatic substitution has been implicated as a mechanism for both the biotic and abiotic hydrodehalogenation of aromatics. Two mechanisms for the aqueous dehalogenation of aromatics involving nucleophilic aromatic substitution with hydride as a nucleophile are investigated using a validated density functional and continuum solvation ...
Christopher Cramer, Kristopher McNeill
exaly   +4 more sources

Aromatic Nucleophilic Substitution Reactions.

Chemical Reviews, 1951
Joseph F Bunnett
exaly   +2 more sources

ChemInform Abstract: Nucleophilic Aromatic Substitutions

ChemInform, 1981
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Predicting Regioselectivity in Nucleophilic Aromatic Substitution

The Journal of Organic Chemistry, 2012
We have investigated practical and computationally efficient methods for the quantitative prediction of regioisomer distribution in kinetically controlled nucleophilic aromatic substitution reactions. One of the methods is based on calculating the relative stabilities of the isomeric σ-complex intermediates using DFT. We show that predictions from this
Magnus, Liljenberg, Tore, Brinck, Björn, Herschend, Tobias, Rein, Simone, Tomasi, Mats, Svensson   +5 more
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Mechanism of aromatic nucleophilic substitution

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1976
1. A mechanism was proposed for aromatic nucleophilic substitution, which consists in attack of the nucleophile on the substituted bond, with electron transfer to the aromatic substrate and the formation of a pair of free radicals. 2.
A. I. D'yachenko, A. I. Ioffe
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Nucleophilic aromatic substitution on aromatic aldimines

Tetrahedron Letters, 1993
Abstract Ortho-methoxy-substituted benzaldimines derived from 3-amino-2,4-dimethylpentane undergo efficient nucleophilic aromatic substitution with typical organolithium reagents. The aldimine products can be hydrolyzed under mild conditions to provide ortho-alkyl or ortho-phenyl benzaldehyde derivatives.
Lec A. Flippin, David S. Carter, Nathan J.P. Dubree   +2 more
exaly   +2 more sources

Nucleophilic aromatic substitution with dialkoxycarbenes

Canadian Journal of Chemistry, 1997
Dimethoxycarbene, generated at 110 °C by thermolysis of 2,2-dimethoxy-5,5-dimethyl-Δ3-1,3,4-oxadiazoline, displaces fluoride from aromatic rings that are activated with electron-withdrawing groups. Intermolecular substitution on Sanger's reagent and on hexafluorobenzene are reported, together with intramolecular substitution by a dioxycarbene with a ...
Joseph P. Ross, Philippe Couture, John Warkentin   +2 more
openaire   +1 more source

Nucleophilic aromatic substitution

1992
This chapter focuses on nucleophilic aromatic substitution. In the case of alkyl halides, two main modes of nucleophilic substitution are possible. For those halides which can dissociate to give a stable carbocation this is the rate determining step.
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