“…[207,208] and dipyrrolo[1,2-a;2',1'-c]pyrazines [209][210][211][212][213][214][215][216] in electrophilic substitution reactions (protonation, acylation, aminomethylation, nitration, formylation, phosphorylation) was investigated systematically. [207,208] and dipyrrolo[1,2-a;2',1'-c]pyrazines [209][210][211][212][213][214][215][216] in electrophilic substitution reactions (protonation, acylation, aminomethylation, nitration, formylation, phosphorylation) was investigated systematically.…”