75613-90-0

Upstream product

• 61226-21-9 Antipyrinsaeurechlorid 
• 2678-54-8 ketene diethyl acetal 

Downstream Products

• 77747-53-6 5-Antipyryl-3-hydroxy-1-phenylpyrazole 
• 77747-60-5 3-Amino-5-antipyryl-1-phenylpyrazole 
• 77747-56-9 3-Antipyryl-5-methoxy-1-phenylpyrazole 
• 77747-59-2 Antipyroylketen-amino-phenylhydrazino-N,N-acetal 
• 77747-57-0 3-Antipyryl-2-methyl-1-phenyl-3-pyrazolin-5-one 
• 77747-55-8 Antipyroylessigsaeureanilid 
• 77747-61-6 3-Antipyryl-5-hydroxy-1-phenylpyrazole 
• 75613-92-2 3-Antipyryl-4,4-dibrom-2-pyrazolin-5-on 
• 75613-94-4 Antipyrylpropiolsaeuremethylester 
• 75613-89-7 5-Antipyryl-3-hydroxypyrazol 
• 75613-93-3 Antipyrylpropiolsaeure 
• 77747-50-3 4-((Z)-3-Benzylamino-3-ethoxy-acryloyl)-1,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-one 
• 75613-88-6 Antipyroylessigsaeureethylester 
• 75613-91-1 5-Antipyryl-3-ethoxypyrazol 

Relevant academic research and scientific papers

Antipyrine Derivative with Heterocyclic Substituents, I: New Bipyrazolones

Starting from antipyroylketene acetal (1) and ethyl antipyroylacetate (8), the isomeric bipyrazolones 10b and 12b as well as their derivatives 10a, 11, 12a and 14 were prepared.The tautomerism of the bipyrazolones is discussed on the basis of their spectr