50709-69-8

Upstream product

• 28172-58-9 2-p-methoxyphenyl-4-phenyl-2-oxazolin-5-one 
• 2213-79-8 methyl 2-chloro-3,5-dinitrobenzoate 
• 70-34-8 2,4-Dinitrofluorobenzene 

Downstream Products

• 50709-78-9 6-nitro-3-phenyl-1H-indazol-1-ol 
• 50709-84-7 2,4-dinitrobenzophenone 
• 110315-21-4 1-methoxy-6-nitro-3-phenyl-1H-indazole 

Relevant academic research and scientific papers

5-Oxazolones, II 2,4-Diaryl-4-(2,4-dinitroaryl)-5(4H)-oxazolones: Synthesis and Acid-Catalyzed Transformation into 1-Hydroxy-1H-indazole Derivatives

2,4-Diaryl-4-(2,4-dinitroaryl)-5(4 H)-oxazolones 2 were prepared by arylation of the corresponding 5(4H)-oxazolones 1 under phase-transfer conditions with the corresponding 1-halo-2,4-dinitrobenzenes. 2,4-Diaryl-4-(3,5-dinitro-2-pyridyl)-5(4H)-oxazolones 5 were obtained similarly from the corresponding 1 and 2-chloro-3,5-dinitropyridine.On reaction with methanol and p-toluenesulfonic acid , oxazolones 2 rearranged to the corresponding 1-hydroxy-1H-indazole derivatives 8.Under the same conditions oxazolones 5 afforded a mixture of the correspondingly substituted 1H-pyrazolopyridines 7 and substituted imidazopyridines 12.In all cases the solvolysis reaction, yielding substituted glycine esters 9 and 11, was competitive with the rearrangement.Reaction path are discussed.