Quaternary Salts of 1,2-Bisazolyl- and 1,2-Bisbenzazolylethanes†

Eleven new heterocyclic mono-and diquaternary salts have been prepared by reaction of 1,2-bisazolyl- and 1,2-bisbenzazolyl-ethanes with methyl sulfate or methyl fluorosulfonate. Their structure has been established by means of 1H and 13C NMR spectroscopy. Homonuclear COSY and NOESY experiments and 2D-heteronuclear correlations have been performed when necessary to assign all NMR signals.