REACTIONS ON POLYMERS WITH AMINE GROUPS - IV STUDIES ON THE REACTION OF SOME PYRIDINE COMPOUNDS WITH ALPHA,BETA-UNSATURATED CARBOXYLIC-ACIDS

The reaction of pyridine and methylpyridines with alpha, beta-unsatura ted carboxylic acids, such as: acrylic, methacrylic, crotonic, cinnami c, itaconic, fumaric and maleic acid, as well as the reactions of di-a nd trimethylpyridines with acrylic and maleic acids were studied. The reactions developed by such compounds may be, actually, considered as a competition between addition and neutralization, resulting betaine a nd/or salt. The factors influencing the development reaction are the c hemical structure of the amine, acid and solvent, as well as the react ion duration. The order of reactivity for the same reactions was estab lished by half-times. ?he H-1-NMR methodology was applied for elucidat ing both the chemically obtained structures and the half-times.