Conformational investigation of N-aralkylpyridinium ions by Cotton-Mouton effect method
Molar Cotton-Mouton constants and refractions are reported at 298 K for the following N-aralkylpyridinium cations as solutes in water or acetonitrile: (C6H5)CH2(+NC5H5), (4-ClC6H4)CH2(+NC5H5), (3-ClC6H4)CH2(+NC5H5), (3-ClC
Bulgarevich, S. B.,Bren, D. V.,Movshovic, D. Y.,Finocchiaro, P.,Failla, S.
MUTUAL EFFECTS OF THE STRUCTURE IN THE REACTIONS OF BENZYL BROMIDES WITH PYRIDINES
The rate of the reactions of benzyl bromides with pyridines in nitrobenzene at 40 deg C was measured.The nonadditivity of the joint action of the electronic effects of substituents in the molecules of the reagents on the reactivity of the benzyl bromide-p
Shpan'ko, I. V.,Korostylev, A. P.,Shved, E. N.,Litvinenko, L. M.
p. 1562 - 1565
(2007/10/02)
EFFECTS OF SUBSTITUENTS IN THE BENZYL BROMIDE ON THE KINETICS OF THE BENZYLATION OF AMINES
The kinetics of the reactions of 3- and 4-substituted benzyl bromides with amines having various structures in nitrobenzene at 40 deg C were investigated.The 4-substituted benzyl bromides have higher reactivity compared with that calculated on the basis of the linear correlations according to the Hammett-Taft equation for unsubstituted and 3-substituted benzyl bromides containing electron-withdrawning substituents.The reactivity of benzyl bromides containing electron-donating substituents obeys a linear correlation with the ?+ constants.The effects of structural changes in the substrate and the nucleophile on the character of the transition states of the investigated reactions is discussed.
Shpan'ko, I. V.,Korostylev, A. P.,Rusu, L. N.
p. 1715 - 1723
(2007/10/02)
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