Results 131 to 140 of about 597,655 (179)

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

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
openaire   +3 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.
openaire   +1 more source

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
openaire   +1 more source

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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Nucleophilic Aromatic Substitution

ChemInform, 2002
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
openaire   +1 more source

Intermediates in nucleophilic aromatic substitution

Journal of the American Chemical Society, 1987
On reetudie les reactions des chlorures et sulfonate de picryle et du dinitro-1,3,5 benzene avec OH − dans H 2 O et H 2 O ...
Radu Bacaloglu, Clifford A. Bunton, Giorgio Cerichelli   +2 more
openaire   +1 more source

Directed nucleophilic aromatic substitution reaction

Chemical Communications
In this study, we discovered a directed nucleophilic aromatic substitution reaction, “directed SNAr (dSNAr),” in the reaction of ortho -iodobezamides and amine in the presence of pyridine.
Yasuyuki Nitta, Yusei Nakashima, Michinori Sumimoto, Takashi Nishikata   +3 more
openaire   +2 more sources