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Rate constants of the reaction of tris(p-methoxyphenyl)vinyi cations with pyridine derivatives were measured in acetonitrile solution at room temperature using the flash photolysis technique. The lowest value (k2 =3.4 x 1041tool -1 s-1) was found for 2,6-di-tert-butylpyridine, which is frequently used as a proton trap in cationic polymerizations. 4-tert-Butylpyridine and pyridine exhibited the highest reactivity towards the vinyl cations: k 2 = 3.2 x 107 and 2.8 x 1071 mol-1 s-1, respectively.

Посилання на статтю:

On the reactivity of pyridines towards carbocations / A. Dembinski*, Y. Yagcit and W. Schnabel // Polymer. – 1993. – Vol 34. – P. 3738-3740.

On the reactivity of pyridines towards carbocations - Завантажити.