A Novel Synthesis of 5-Hydrazono-4a,7-dihydrodipyrazolo[3,4-b;4,3-e]pyridin-3(2H)-ones and their Cyclization to Fused Triazines
Abstract
Several 5-hydrazono-4a,7-dihydrodipyrazolo[3,4-b;4,3-e]pyridin-3(2H)-ones and triazines derived thereform were synthesized via the reaction of diazotized dipyrazolopyridines with active-methylene-containing reagents.