Reactions of ionised pyridazine, aminopyrazine and aminopyridine and their isomeric α-distonic ions

The reactions of ionised pyridazine, aminopyrazine and aminopyridine and the corresponding α-distonic ions are examined by a combination of tandem mass spectrometric techniques, including analysis of metastable ion (MI), collision induced dissociation and neutralisation–reionisation mass spectra (NRMS). Further insight into the relative stability and energy barriers towards tautomerism of each ionised heterocycle with its α-distonic isomer is …