71971-38-5

Upstream product

• 623-73-4 diazoacetic acid ethyl ester 
• 614-47-1 1,3-diphenyl-propen-3-one 

Downstream Products

• 21673-02-9 (phenyl(4-phenyl)-1H-pyrazol-3-yl)(phenyl)methanone 
• 71974-73-7 5-benzoyl-4-phenyl-3,4-dihydro-2H-pyrazole-3-carboxylic acid hydrazide 
• 105592-62-9 3-benzoyl-4-phenyl-1-methylpyrazole 
• 105994-70-5 ethyl 3-benzoyl-4-phenyl-1-methyl-5-pyrazolecarboxylate 
• 105994-66-9 3-benzoyl-4-phenyl-1-methylpyrazole-5-carboxylic acid 
• 187158-74-3 5-Benzoyl-4-phenyl-3,4-dihydro-2H-pyrazole-3-carboxylic acid [1-(4-methoxy-phenyl)-meth-(E)-ylidene]-hydrazide 
• 187159-62-2 5-Benzoyl-4-phenyl-3,4-dihydro-2H-pyrazole-3-carboxylic acid [(E)-3-phenyl-prop-2-en-(E)-ylidene]-hydrazide 
• 187159-60-0 5-Benzoyl-4-phenyl-3,4-dihydro-2H-pyrazole-3-carboxylic acid [1-phenyl-meth-(E)-ylidene]-hydrazide 
• 105994-69-2 ethyl 3-benzoyl-4-phenyl-1-methyl-2-pyrazoline-5-carboxylate 

Relevant academic research and scientific papers

Reactions of aliphatic diazo compounds: III. Reaction of ethyl diazoacetate with 1,3-diarylpropenones

Ethyl diazoacetate adds to 1,3-diarylpropenones in a regioselective fashion to give intermediate 4,5-dihydro-3W-pyrazole derivative; 1,3-hydride shift in the latter leads to formation of isomeric ethyl 4-aryl-5-aroyl-4,5-dihydro-1H-pyrazole-3-carboxylate