The Influence of Substituents on the Tautomerism of Symmetrically Substituted 2,2'-Bis-benzimidazoles

AUTOR(ES)

Dall'Oglio, Evandro, Caro, Miguel B., Gesser, José C., Zucco, César, Rezende, Marcos C.

FONTE

Journal of the Brazilian Chemical Society

DATA DE PUBLICAÇÃO

2002

RESUMO

O tautomerismo de cinco 2,2'-bis-benzimidazóis, simetricamente substituídos, [5(6),5'(6')-tetrametil- (1); 5(6),5'(6')-dimetil-(2); 5(6),5'(6')-dicloro- (3); 5(6),5'(6')-dimetoxi- (4) e 4(7),4'(7')-dimetil-2,2'-bis-benzimidazol (5)], foi estudado por espectroscopia de ¹H RMN, a várias temperaturas, e a influência dos substituintes nas barreiras energéticas de interconversão tautomérica, interpretada através de cálculos teóricos.

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