74676-91-8

Upstream product

• 5335-36-4 ethyl phenylazocyanoacetate 
• 74676-83-8 ethyl methylphenylhydrazonocyanoacetate 

Downstream Products

• 74676-90-7 3-amino-4-N-methylphenylazo-2-pyrazolin-5-one 
• 88482-45-5 N'-[2-Cyano-2-(methyl-phenyl-hydrazono)-acetyl]-hydrazinecarboxylic acid ethyl ester 
• 88508-31-0 3-(3,5-Dimethyl-pyrazol-1-yl)-2-(methyl-phenyl-hydrazono)-3-oxo-propionitrile 
• 88482-42-2 Acetic acid N'-[2-cyano-2-(methyl-phenyl-hydrazono)-acetyl]-hydrazide 
• 88482-57-9 C₁₇H₁₆N₆OS 
• 88482-56-8 C₁₇H₁₆N₆O₂ 
• 88482-43-3 Benzoic acid N'-[2-cyano-2-(methyl-phenyl-hydrazono)-acetyl]-hydrazide 
• 88482-54-6 Cyano-(methyl-phenyl-hydrazono)-acetic acid [1-phenyl-meth-(Z)-ylidene]-hydrazide 
• 88482-44-4 3-Oxo-butyric acid N'-[2-cyano-2-(methyl-phenyl-hydrazono)-acetyl]-hydrazide 
• 88482-53-5 Cyano-(methyl-phenyl-hydrazono)-acetic acid N'-hydroxymethyl-hydrazide 

Relevant academic research and scientific papers

Reactions with the Arylhydrazones of some α-Cyanoketones

The N-methylarylhydrazones of mesoxalodinitrile (3) and of ethyl cyanoglyoxalate (7) could be prepared via methylation of the corresponding phenylhydrazones 4 and 6, respectively.The hydrazones 3 and 8 reacted with hydrazine hydrate to yield the amidrazone 1 and the hydrazide 2b.The behaviour of compounds 1 and 2a, b towards a variety of reagents is reported.A variety of new α-arylhydrazononitriles were synthesised. - Keywords: Arylhydrazones, α-Cyanoketones

Chemistry of Heterocyclic Amidines: Part IX - Structure of 3-Amino-4-arylazo-2-pyrazolin-5-one

The structures of 3-amino-4-arylazo-2-pyrazolin-5-ones (Ia-g) have been assigned on the basis of UV, IR and polarographic analyse.Apparent dissociation constants (pKa) together with half-wave potentials (E1/2) are correlated with Hammet's different ? sets.The obtained data indicate that these compounds exist in solid state in the hydrazone form while in aqueous buffered media in the azo form.