Deuterium kinetic isotope effects in the quaternization of polymethylpyridines (CH3 or CD3) with methyl iodide or D3-methyl iodide
Résumé
The rates of quaternization of six CH3- or CD3-substituted pyridines in acetone at 250C with CH3I or CD3I were determined conductimetrically. The main results which are presented indicate that in all cases replacement of CH3 by CD3 causes a small acceleration. This secondary isotope effect could be due to steric and/or electronic components. These are estimated and the results are shown and discussed.
Domaines
Chimie organique
Origine : Accord explicite pour ce dépôt