Protolytic equilibrium of certain annelated azoloazines

Abstract

Br, CI). The anne/lied azoh>azines studied are weaker bases than their unannelated anah~,4.s'. ,qc'c'ording to qttantttm cltemical calculations (AMI). prtllon(ttion t?/these heterocvcles may occur both at the a-ole and the azine /i'agments hithe molecule.