P. Melnyk et al., HECK REACTION TO A NEW HETEROCYCLIC SYSTEM - PYRIDO[2',3'-D']PYRIDAZINO[2,3-A]INDOLE, Tetrahedron letters, 34(34), 1993, pp. 5449-5450
Starting from a judiciously substituted N-aminoindole, the Heck reacti
on led to a new class of heterocyclic compounds pyrido[2',3'-d']pyrida
zino[2,3-a]indole.