188199-11-3

Upstream product

• 188199-07-7 6-amino-4-(4-methoxyphenyl)-1,3-diphenyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile 
• 4845-49-2 1,3-diphenyl-5-oxo-4,5-dihydro-1H-pyrazole 
• 2826-26-8 2-(4-methoxyphenylmethylene)malononitrile 
• 188199-09-9 ethyl N-(5-cyano-1,4-dihydro-4-p-methoxyphenyl-1,3-diphenylpyrano<2,3-c>pyrazol-6-yl)methanimidate 

Relevant academic research and scientific papers

Synthesis of New 2-Substituted-pyrazolo[4′,3′:5,6]pyrano[3,2-e][1,2,4]-triazolo[1,5- c]pyrimidine Derivatives

1,3-Diphenylpyrazol-5-one has been reacted with arylidenemalononitriles (la-d) to afford pyrano[2,3-c]pyrazoles (2a-d). Reaction of 2d with triethyl orthoformate gives compound 4 which on hydrazinolysis yields aminoiminopy rimidine derivative (5). Interaction of different carboxylic acid derivatives with compound 5 gives 2-substituted-1,2,4-triazolopyrimidine derivatives (6-11).