作者:Alan R. Katritzky、Bahaa El-Dien M. El-Gendy、Bogdan Draghici、C. Dennis Hall、Peter J. Steel
DOI:10.1021/jo101195z
日期:2010.10.1
N-(α-Aminoalkyl)tetrazoles exist in solution as equilibrium mixtures of N1 and N2 tautomers. The position of equilibrium depends significantly on the polarity of the solvent and the substituents in the tetrazole ring. Interconversion between individual tautomers is shown to proceed via tight ion-pair intermediates in which intramolecular recombination is faster than the intermolecular crossover since
N-(α-氨基烷基)四唑以N1和N2互变异构体的平衡混合物形式存在于溶液中。平衡位置很大程度上取决于溶剂的极性和四唑环中的取代基。各个互变异构体之间的相互转化显示为通过紧密的离子对中间体进行,其中分子内重组比分子间交换更快,因为分子间交换可能需要溶剂分离离子对中间体。