Answers are grounded in this paper and cite their sources.
Several newnaphtho[2′,1′:5,6]pyrano[2,3-d ]pyrimidineshave been synthesized via hydrazinolysis of a2-ethoxymethylideneaminonaphtho[1,2-b ]pyran;polysubstitutedpyrano[3,2-e ][1,2,4]triazolo[1,5-c ]pyrimidineshave also been prepared.
No takes yet. Share an insight, caveat, or question.
El‐Agrody et al. (1997) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: