58004-75-4

Upstream product

• 876479-55-9 N-benzoyl-N'-(chloro-diphenyl-acetyl)-hydrazine 
• 6636-02-8 diphenylacetylhydrazine 
• 98-88-4 benzoyl chloride 
• 122-66-7 diphenyl hydrazine 
• 902779-63-9 (E)-N'-((4-oxo-4H-chromen-3-yl)methylene)benzohydrazide 
• 1871-76-7 diphenylacetic acid chloride 
• 2902-98-9 2-chloro-2,2-diphenylacetyl chloride 

Downstream Products

• 58004-74-3 2-benzhydryl-5-phenyl-1,3,4-oxadiazole 
• 857999-25-8 benzhydryl-phenyl-[1,3,4]thiadiazole 
• 30990-96-6 3-diphenylmethyl-4,5-diphenyl-4H-1,2,4-triazole 
• 58004-68-5 N-(α-chloro-benzylidene)-N'-(1-chloro-2,2-diphenyl-ethylidene)-hydrazine 

Relevant academic research and scientific papers

Reaction of 3-formylchromone-N-benzoylhydrazone with ketenes. Synthesis and structural studies of chromone 1,3,4-oxadiazolines

(Chemical Equation Presented) The reaction of 3-formylchromone-N- benzoylhydrazone with ketenes, prepared in situ from the corresponding acid chlorides 2a-d and the mixed anhydride 2e was studied. In all cases 2-(4′-oxo-4′H-3′-chromyl)-5-phenyl-2,3-dihydro-1,3, 4-oxadiazoles (3) were isolated in yields varying from 40 to 80%. A full structure assignment of all products has been made on the basis of 1D and 2-D (COSY H-H, COSY C-H, COLOC C-H) NMR spectra. A plausible reaction mechanism is also proposed based on theoretical approaches and experimental results.