NMR Studies of the Equilibria Produced by 6??and 8??Substituted Tetrazolo [1, 5??a] pyridines

P Cmoch, L Stefaniak, GA Webb

文献索引：Cmoch, Piotr; Stefaniak, Lech; Webb, Graham A. Magnetic Resonance in Chemistry, 1997 , vol. 35, # 4 p. 237 - 242

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被引用次数: 31

摘要

Abstract 1 H, 13 C and 15 N NMR data are reported for nine tetrazoles. Five of these compounds are found to exhibit valence tautomeric equilibrium between the tetrazole and azide forms. The position of this equilibrium at 298 K is found to be dependent on the solvent and the position and nature of the substituent. More polar solvents favour the tetrazole form. Protonation studies on the two forms using TFA as a solvent are reported. The favoured ...