62399-05-7

Upstream product

• 62399-04-6 N,N'-Bis(phenylacetyl)benzidine-3,3'-dicarboxylic acid 
• 103-80-0 phenylacetyl chloride 
• 2130-56-5 3,3'-dicarboxy-4,4'-diaminobiphenyl 

Downstream Products

• 62385-51-7 2,2'-dibenzoyl-[6,6']bi[benzo[d][1,3]oxazinyl]-4,4'-dione 
• 84325-75-7 2,2'-Dibenzyl-<6,6'-biquinazoline>-4,4'(3H,3'H)-dione 
• 1256246-82-8 6,6'-bis(3-amino-2-benzylquinazolone) 
• 84325-76-8 2,2'-Dibenzyl-3,3'-dimethyl-3H,3'H-[6,6']biquinazolinyl-4,4'-dione 
• 84325-77-9 2,2'-Dibenzyl-3,3'-diphenyl-3H,3'H-[6,6']biquinazolinyl-4,4'-dione 

Relevant academic research and scientific papers

Synthesis of poly(pyridazinoquinazolones)

A model reaction of 2-alkyl-3-aminoquinazolones with α-dicarbonyl compounds benzil and its 4,4′-derivatives, acenaphthenequinone and isatin was studied for the first time. The reaction proceeded in pentafluorophenol and led to the formation of new heterocyclic systems. This approach was used in the synthesis of new thermostable polyheteroarylenes with fluorescent properties, viz., poly(pyridazinoquinazolones).

Synthesis of 2,2'-Disubstituted and 2,2',3,3'-Tetrasubstituted -4,4'(3H,3'H)-diones

2,2'-Disubstituted -4,4'-diones react with ammonia, methylamine and aniline above 80 deg C affording the title compounds (Ia-k).These compounds have also been prepared by the modified Niementowski synthesis using appropriate dia