137201-84-4

Upstream product

• 57573-52-1 4-methylbenzene diazonium 
• 105-50-0 diethyl 1,3-acetonedicarboxylate 
• 2028-84-4 p-methylbenzenediazonium chloride 

Downstream Products

• 137201-90-2 (5-Oxo-4,5-dihydro-1H-pyrazol-3-yl)-(p-tolyl-hydrazono)-acetic acid ethyl ester 
• 137201-86-6 (5-Hydroxy-1H-pyrazol-3-yl)-(p-tolyl-hydrazono)-acetic acid ethyl ester 
• 133405-23-9 3,6-bis-(1-phenylpyrazoline-5-one-3-yl)-piperazine-2,5-dione 
• 137202-01-8 3-Hydroxy-2,4-diphenyl-5-p-tolyl-4,5-dihydro-2H-pyrazolo[3,4-d]pyridazine-7-carboxylic acid ethyl ester 
• 137201-94-6 3-Oxo-2-phenyl-5-p-tolyl-3,5-dihydro-2H-pyrazolo[3,4-d]pyridazine-7-carboxylic acid ethyl ester 
• 137201-98-0 3-Hydroxy-2-phenyl-5-p-tolyl-4,5-dihydro-2H-pyrazolo[3,4-d]pyridazine-7-carboxylic acid ethyl ester 
• 137201-99-1 3-Hydroxy-4-phenyl-5-p-tolyl-4,5-dihydro-2H-pyrazolo[3,4-d]pyridazine-7-carboxylic acid ethyl ester 
• 137201-96-8 3-Hydroxy-5-p-tolyl-4,5-dihydro-2H-pyrazolo[3,4-d]pyridazine-7-carboxylic acid ethyl ester 
• 137201-88-8 (5-Hydroxy-1-phenyl-1H-pyrazol-3-yl)-(p-tolyl-hydrazono)-acetic acid ethyl ester 
• 137201-92-4 (5-Oxo-1-phenyl-4,5-dihydro-1H-pyrazol-3-yl)-(p-tolyl-hydrazono)-acetic acid ethyl ester 

Relevant academic research and scientific papers

Spectral studies on some diethyl 2,3-dioxopentanedioate-2-arylhydrazones

The newly prepared diethyl 2,3-dioxopentanedioate-2-arylhydrazones exist in the keto-hydrazone form stabilized by hydrogen bonding between NH and ketonic CO resulting in a six membered ring system. Effect of substituents and solvents on the charge transfe