1430208-07-3Relevant academic research and scientific papers
Dipyrazolo[1,5-a:4',3'-c]pyridines - A new heterocyclic system accessed via multicomponent reaction
Holzer, Wolfgang,Vilkauskaite, Gyte,Arbaciauskiene, Egle,Sackus, Algirdas
supporting information, p. 2223 - 2229 (2013/02/23)
The synthesis of dipyrazolo[1,5-a:4',3'-c]pyridines is described. Easily obtainable 5-alkynylpyrazole-4-carbaldehydes, p-toluenesulfonyl hydrazide, and an aldehyde or ketone containing an α-hydrogen atom were reacted in a silver triflate catalyzed multicomponent reaction affording new tricyclic compounds with a dipyrazolo[1,5-a:4',3'-c]pyridine core. Detailed NMR spectroscopic investigations (1H, 13C and 15N) were undertaken with all obtained compounds.
