33816-56-7

Upstream product

• 120-46-7 1,3-diphenylpropanedione 
• 26788-89-6 phenylazo 4-methylphenyl sulfone 
• 2684-02-8 benzenediazonium 
• 100-34-5 benzene diazonium chloride 
• 141-52-6 sodium ethanolate 
• 21317-40-8 benzoic acid-[(1-benzoyl-2-oxo-2-phenyl-ethylidene)-phenyl-hydrazide] 

Downstream Products

• 81919-04-2 2-amino-1,3-diphenyl-propane-1,3-diol 
• 75872-31-0 6-Benzoyl-2,5-diphenyl-3(2H)-pyridazinon 
• 54696-94-5 3,5-diphenyl-4-phenylazo-(2H)-1,2,6-thiadiazine 1,1-dioxide 
• 444102-96-9 Acetic acid (2S,3R,4S,5S,6R)-4,5-diacetoxy-6-acetoxymethyl-2-(3-cyano-4,6-diphenyl-5-phenylazo-pyridin-2-ylsulfanyl)-tetrahydro-pyran-3-yl ester 
• 444102-91-4 Acetic acid (2S,3R,4S,5R,6R)-4,5-diacetoxy-6-acetoxymethyl-2-(3-cyano-4,6-diphenyl-5-phenylazo-pyridin-2-ylsulfanyl)-tetrahydro-pyran-3-yl ester 
• 75872-32-1 {1,4-Diphenyl-6-[(E)-phenylimino]-1,6-dihydro-pyridazin-3-yl}-phenyl-methanone 
• 70826-77-6 1-(4,6-dimethyl-pyrimidin-2-yl)-3,5-diphenyl-4-phenylazo-1H-pyrazole 
• 75872-32-1 <1,6-Dihydro-1,4-diphenyl-6-(phenylimino)-3-pyridazinyl>phenylmethanon 

Relevant academic research and scientific papers

Pyridine-Catalysed Desulfonylative Addition of β-Diketones to Arylazosulfones via Diaziridine Rearrangement

A pyridine-catalysed desulfonylative addition of β-diketones to arylazosulfones was developed to obtain diazenyl β-dicarbonyl compounds. The aryldiazenyl group was observed in the desired product from arylazosulfones, and this diazenylation reaction was achieved via a possible rearrangement process based on diaziridine ring cleavage. The scope of the protocol was investigated and a plausible mechanism was given. (Figure presented.).

Predominance of 2-arylhydrazones of 1,3-diphenyl-propane-1,2,3-trione over its proton-transfer products

2-Phenylhydrazones of 1,3-diphenyl-1,2,3-trione are the dominant tautomeric form detected in chloroform solution by 15N NMR chemical shifts. The substituent in the phenylhydrazone moiety does not affect this tautomeric preference. The substituent effect is transmitted effectively only to the hydrazone nitrogen and hydrogen atoms. Ab initio calculations show that the ketohydrazone tautomer is really very much favoured over its proton-transfer products in chloroform solution. The same tautomer was also detected in the crystal state by X-ray crystallography. Copyright