The first synthesis of furazano[3,4-b] [1,6]naphthyridines

摘要

Reaction of 6-acetyl-7-aminofurazano[3,4-b]pyridines with DMFDMA afforded NN-dimethylform-amidines that were cyclized to the novel furazan-fused [1,6]naphthyridine system by treatment with sodium methylate in good yield. The tricyclic system is characterized by X-ray crystallography.