114141-92-3

Upstream product

• 114170-91-1 5-carbethoxy-6-methyl-1-phenyl-3-(3'-pyridyl)-1H-pyrano<2,3-c>pyrazole 
• 114141-96-7 4-formyl-1-phenyl-3-(3'-pyridyl)-2-pyrazolin-5-one 
• 21683-61-4 3-(pyridin-3-yl)-1-phenyl-4,5-dihydropyrazol-5-one 

Relevant academic research and scientific papers

Studies on the Pyridylpyrazolone System: Part V - Cyclocondensation of 1-Phenyl-3-(3'-pyridyl)-2-pyrazolin-5-one with Ethyl Acetoacetate and Related Compounds

The reaction of 1-phenyl-3-(3'-pyridyl)-2-pyrazolin-5-one (I) with ethyl acetoacetate, diethyl acetonedicarboxylate and diethyl β,β-dioxobenzene-1,4-dipropionate yields the corresponding 1H-pyranopyrazolones (II-IV).Compound II is readily converted