85094-18-4

Upstream product

• 51516-96-2 3-nitrophenylhydrazine hydrochloride 
• 141-97-9 ethyl acetoacetate 
• 619-27-2 3-nitrophenylhydrazine 
• 119-16-4 5-methyl-2-(3-nitrophenyl)-2,4-dihydro-pyrazol-3-one 
• 626-34-6 ethyl aminocrotonate 
• 96138-43-1 3-[3-Methyl-1-(3-nitro-phenyl)-5-oxo-1,5-dihydro-pyrazol-(4Z)-ylidene]-butyric acid ethyl ester 

Downstream Products

• 85094-33-3 3,4-Dimethyl-5-nitro-1-(3-nitro-phenyl)-1H-pyrano[2,3-c]pyrazol-6-one 
• 85094-30-0 1-(3,4-Dinitro-phenyl)-3,4-dimethyl-5-nitro-1H-pyrano[2,3-c]pyrazol-6-one 

Relevant academic research and scientific papers

ETUDE DE LA REACTIVITE DU 3-AMINO-2-BUTENOATE D'ETHYLE VIS-A-VIS D'AZOLINE-5-ONES.

Various 1,3-disubstituted pyrazolin-5-ones, 3-phenylisoxazolin-5-one and 2-phenyloxazolin-5-one react with ethyl 3-amino-2-butenoate to yield compounds resulting from the elimination of ammonia between the precursors; subsequent intramolecular cyclization

Pyranopyrazoles. II (1). Synthesis and Reactions of 1H,6H-Pyranopyrazol-6-ones

Various 1H,6H-pyranopyrazol-6-ones (III-XXIII) were obtained from β-keto esters and 1H-pyrazol-5-ones or hydrazines.Nitrations, chlorinations and brominations of these pyranopyrazoles were also carried out giving the corresponding derivatives (XXIV-LXIV).The pyrone ring is the more reactive one by the addition-elimination route.