119836-96-3

Upstream product

• 670-54-2 ethenetetracarbonitrile 
• 4845-49-2 1,3-diphenyl-5-oxo-4,5-dihydro-1H-pyrazole 

Downstream Products

• 137123-45-6 2-(1,2-dimethyl-1H-indol-3-yl)-2-(5-hydroxy-1,3-diphenyl-1H-pyrazol-4-yl)malononitrile 
• 119837-26-2 4-(3'-Chlor-phenylamino-cyanomethylen)-1,3-diphenyl-2-pyrazolin-5-on 
• 127207-60-7 <4,5-Dihydro-1,3-diphenyl-5-oxo-4-pyrazolyliden><4-(1,4,7,10-tetraoxa-13-aza-13-cyclopentadecyl)phenyl>acetonitril 
• 137123-57-0 (1,2-Dimethyl-1H-indol-3-yl)-[5-oxo-1,3-diphenyl-1,5-dihydro-pyrazol-(4E)-ylidene]-acetonitrile 
• 137123-56-9 (2-Methyl-1H-indol-3-yl)-[5-oxo-1,3-diphenyl-1,5-dihydro-pyrazol-(4E)-ylidene]-acetonitrile 
• 137123-64-9 (1-Methyl-1H-pyrrol-3-yl)-[5-oxo-1,3-diphenyl-1,5-dihydro-pyrazol-(4E)-ylidene]-acetonitrile 
• 127207-55-0 <4,5-Dihydro-5-oxo-1,3-diphenyl-4-pyrazolyl><4-(1,4,7,10-tetraoxa-13-aza-13-cyclopentadecyl)phenyl>malononitril 
• 137123-44-5 2-(5-hydroxy-1,3-diphenyl-1H-pyrazol-4-yl)-2-(2-methyl-1H-indol-3-yl)malononitrile 
• 137123-50-3 2-(5-hydroxy-1,3-diphenyl-1H-pyrazol-4-yl)-2-(1-methyl-1H-pyrrol-3-yl)malononitrile 

Relevant academic research and scientific papers

Syntheses with Nitriles, LXXX. Dicyanomethylenepyrazolinones and Their Chromophoric Properties

1-Phenyl-2-pyrazolin-5-ones 1a-e react with tetracyanoethylene forming the corresponding dicyanomethylenepyrazolin-5-ones 2a-e.The products are deeply coloured with absorption bands between 550 and 650 nm, but low ε-values and negative solvatochromic effe