Abstract
The title reactions are subjected to a kinetic study in water, 25.0 o C, ionic strength 0.2 M (KCl). Under amine excess, pseudo-first-order coefficients (k obsd ) are obtained. Plots of k obsd vs free amine concentration at constant pH are linear, with the slope (k N ) independent of pH. The Bronsted-type plot (log k N vs pK a of the amine) found is linear, with slope β=0.48, indicating a concerted mechanism
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