1,2-Bis(azol-1-yl)ethanes. Deprotonation and Subsequent Reaction with Electrophiles.

Deprotonation of the title compounds and subsequent reaction with electrophiles have been performed.The main factor governing the reaction, substitution vs elimination, is the acidity of the ring hydrogen atoms.Deprotonation of heterocyclic systems and subsequent reaction with electrophiles have been widely studied.'.' We have specially paid attention to bis(azol-l-yl)methanes3 due to their ability as complexating agents4 or their use as intermediates in synthesis.'Other heterocyclic systems, as thiophene6 and pyrrole7 derivatives, ~-benz~lazoles,~ ]-substituted benzotriazolesg and binuclear heteroaromatic systems'0 have been studied by other authors.