728042-67-9

Upstream product

• 105-53-3 diethyl malonate 
• 354131-62-7 5-amino-4-imino-1-phenyl-1H-4,5-dihydropyrazolo[3,4-d]pyrimidine 

Downstream Products

• 354131-62-7 5-amino-4-imino-1-phenyl-1H-4,5-dihydropyrazolo[3,4-d]pyrimidine 
• 728042-96-4 ethyl 5-amino-1-phenyl-1H-pyrazolo[3',4':4,5]pyrimido[1,6-b][1,2,4]triazepine-6-carboxylate 
• 728042-56-6 N-(4-imino-1-phenyl-1H-4,5-dihydropyrazolo[3,4-d]pyrimidin-5-yl)benzamide 

Relevant academic research and scientific papers

Synthesis of new pyrazolo[4,3-e]-1,2,4-triazolo[1,5-c]pyrimidines and related heterocycles

The reaction between 5-amino-4-imino-1(2)-substituted-1(2)H-4,5- dihydropyrazolo[3,4-d]pyrimidines and several commercially available reactants afforded new heterocycles with a conserved pyrazolo[3,4-d]pyrimidine nucleus. The key intermediates employed proved to be suitable compounds by virtue of their two vicinal amino and imino groups that were used to obtain five, six and seven-membered rings.