309732-95-4

Upstream product

• 326-06-7 1-Phenyl-4,4,4-trifluorobutane-1,3-dione 
• 19652-13-2 5-amino-3-(4-methoxylphenyl)-1-phenyl-1H-pyrazole 

Relevant academic research and scientific papers

α-aminoazoles in synthesis of heterocycles: III. 4- trifluoromethylpyrazolo[3,4-b]pyridines: Synthesis and structure

Cyclocondensation of N-substituted 5-aminopyrazoles with fluorinated 1,3-diketones yielded 4-trifluoromethyl-substituted pyrazolo[3,4-b]pyridines as the only reaction products. The regiostructure of compounds obtained was proved by 1H and 13C NMR homo- and heteronuclear correlation spectroscopy. Characteristic chemical shifts in the 13C NMR spectra of regioisomeric pyrazolo[3,4-b]pyridines were established.