2-Aza-1,3-dienes. Part 5. Access to N-Aminoimidazoles, 3H-Pyrroles, Triazolopyrazines, or Imidazolpyrazines

Article abstract of DOI:10.1002/hlca.19870700123

Nucleophilic attack of 5-(dialkylamino)-2-aza-1,3-diene-1,1-dicarbonitriles (or their 1-methoxycarbonyl analogous) by hydrazines or hydrazides gives substituted N-aminoimidazoles, <1,2,4>triazolo-<1,5-a>pyrazines, or α-dihydrazino derivatives.With α-amino