The Influence of Substituents on the Tautomerism of Symmetrically Substituted 2,2’-Bis- benzimidazoles
نویسندگان
چکیده
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 H RMN, a várias temperaturas, e a influência dos substituintes nas barreiras energéticas de interconversão tautomérica, interpretada através de cálculos teóricos.
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