Effect of intramolecular hydrogen bond on the azide-tetrazole equilibrium of 5-(2'-hydroxyphenyl)tetrazolopyrimidine, -tetrazolopyrimidine, -tetrazoloquinazoline and 7-(2'-hydroxyphenyl)tetrazolopyrimidine

Article abstract of DOI:10.1007/BF00714425

The intramolecular hydrogen bond between the phenolic hydroxyl and the pyrimidine nitrogen atom in the title compounds exerts a destabilizing effect on the tetrazole ring and shifts the azide-tetrazole equilibrium toward the azide form, especially in the