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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 ...
Understanding the Physics and Chemistry of Reaction Mechanisms from Atomic Contributions: A Reaction Force Perspective
(AMER CHEMICAL SOC, 2012)
Studying chemical reactions involves the knowledge of the reaction mechanism. Despite activation barriers describing the kinetics or reaction energies reflecting thermodynamic aspects, identifying the underlying physics ...
Insights into the mechanism of an S N2 reaction from the reaction force and the reaction electronic flux
(American Chemical Society, 2012)
The mechanism of a simple S N2 reaction, viz; OH - + CH 3F = CH 3OH + F - has been studied within the framework of reaction force and reaction electronic flux. We have computationally investigated three different types of ...
Dba-free palladium intermediates of the Heck-Matsuda reaction
(2013-05-28)
The dba-free Heck-Matsuda reaction was investigated via direct ESI-MS(/MS) monitoring. Palladium species involved in the reduction of Pd(ii) during a Wacker type reaction and several dba-free arylpalladium transient complexes ...
Dba-free palladium intermediates of the Heck-Matsuda reaction
(2013-05-28)
The dba-free Heck-Matsuda reaction was investigated via direct ESI-MS(/MS) monitoring. Palladium species involved in the reduction of Pd(ii) during a Wacker type reaction and several dba-free arylpalladium transient complexes ...
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 ...
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 ...
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 ...
Rheumatic manifestations in leprosy
(Medfarma-edicoes Medicas, Lda, 2008-10-01)
The classical manifestations of leprosy are cutaneous and neurological involvement; however, rheumatic manifestations are relatively common during the course of the disease and can be the initial manifestation. Herein are ...