121583-01-5

Upstream product

• 2028-74-2 p-chlorobenzenediazonium chloride 
• 105-50-0 diethyl 1,3-acetonedicarboxylate 
• 17333-85-6 4-chlorophenyldiazonium salt 
• 106-47-8 4-chloro-aniline 

Downstream Products

• 137201-89-9 [(4-Chloro-phenyl)-hydrazono]-(5-oxo-4,5-dihydro-1H-pyrazol-3-yl)-acetic acid ethyl ester 
• 137201-85-5 [(4-Chloro-phenyl)-hydrazono]-(5-hydroxy-1H-pyrazol-3-yl)-acetic acid ethyl ester 
• 137201-91-3 1-phenyl-3--5-pyrazolone 
• 137201-87-7 [(4-Chloro-phenyl)-hydrazono]-(5-hydroxy-1-phenyl-1H-pyrazol-3-yl)-acetic acid ethyl ester 
• 133405-23-9 3,6-bis-(1-phenylpyrazoline-5-one-3-yl)-piperazine-2,5-dione 
• 1333-74-0 hydrogen 
• 137202-00-7 5-(4-Chloro-phenyl)-3-hydroxy-2,4-diphenyl-4,5-dihydro-2H-pyrazolo[3,4-d]pyridazine-7-carboxylic acid ethyl ester 
• 137201-93-5 5-(4-Chloro-phenyl)-3-oxo-2-phenyl-3,5-dihydro-2H-pyrazolo[3,4-d]pyridazine-7-carboxylic acid ethyl ester 
• 137201-97-9 5-(4-Chloro-phenyl)-3-hydroxy-2-phenyl-4,5-dihydro-2H-pyrazolo[3,4-d]pyridazine-7-carboxylic 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

Pyridazines with Heteroatom Substituents in Position 3 and 5. 3) 2-Aryl-5-hydroxypyridazin-3(2H)-ones as Potential Herbicides: Synthesis and Some Reactions

The coupling of dimethyl acetonedicarboxylate 1 with a variety of aryldiazonium salts 2a-i produces the hydrazones 3a-i which can be cyclized in boiling dichlorobenzene to yield the pyridazone esters 4a-i, or in sodium hydroxide solution to give the pyrid