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How the Nature of an Alpha-Nucleophile Determines a Brønsted Type-Plot and Its Reaction Pathways. An Experimental Study
(2022)
The reactions between 2-chloro-5-nitro pyrimidine with a serie of α-nucleophile derivatives were kinetically evaluated. The kinetic study was carried out in aqueous media and the data shown an unusual split on the Brønsted ...
Experimental Analyses Emphasize the Stability of the Meisenheimer Complex in a S N Ar Reaction Toward Trends in Reaction Pathways
(2020-07)
The mechanism of SNAr reactions between 2-chloro-5-nitropyrimidine with primary and secondary alicyclic amines, respectively, have been studied by kinetic measurements. The kinetic data obtained in aqueous media opens a ...
Kinetics and reaction mechanism of biothiols involved in SNAr reactions: an experimental study
(Frontiers Media, 2022)
Few kinetic parameters, or reaction rates, are known up to date in detail about 1-chloro and 1-fluoro-2,4-dinitrobenzene (ClDNB and FDNB, respectively) with a series of biothiols in aqueous media. These biological nucleophiles ...
Kinetics and Reaction Mechanism of Biothiols Involved in SNAr Reactions: An Experimental Study
(2022)
Few kinetic parameters, or reaction rates, are known up to date in detail about 1-chloro and 1-fluoro-2,4-dinitrobenzene (ClDNB and FDNB, respectively) with a series of biothiols in aqueous media. These biological nucleophiles ...
Experimental and theoretical study on the substitution reactions of aryl 2,4-dinitrophenyl carbonates with quinuclidines
(PERGAMON-ELSEVIER SCIENCE LTD, 2006-03-13)
The reactions of quinuclidines with phenyl, 4-methylphenyl, and 4-chlorophenyl 2,4-dinitrophenyl carbonates are kinetically evaluated in aqueous solution. The Bronsted-type plots (log k(N) vs pK(a) of quinuclidinium ions) ...
KINETICS AND MECHANISM OF THE AMINOLYSIS OF 2,4-DINITROPHENYL AND 2,4,6-TRINITROPHENYL THIOLACETATES
(ROYAL SOC CHEMISTRY, 1991)
The reactions of the title substrates with alicyclic secondary amines and pyridines are subject to a kinetic study in water [25-degrees-C, ionic strength 0.2 mol dm-3 (KCl)]. The Bronsted-type plots obtained for all ...
The effect of metal-cation vacancies on vanadium antimonate surface properties. A theoretical study
(American Chemical Society, 2013-09-13)
In this work, we studied the distribution of V and Sb vacancies in the rutile-type vanadium antimonate phase and the influence of these cationic defects on the VSbO4(110) surface properties. We performed density functional ...