96498-70-3

Upstream product

• 87085-88-9 5-Methyl-4-nitroso-2-phenyl-2H-pyrazol-3-ol 
• 75-03-6 ethyl iodide 
• 60-35-5 acetamide 
• 91411-69-7 4-bromo-5-chloro-3-methyl-1-phenyl-1H-pyrazole 
• 41927-23-5 4-bromo-3-methyl-1-phenylpyrazol-5-one 
• 100-63-0 phenylhydrazine 
• 89-25-8 edaravone 

Downstream Products

• 96498-71-4 3-methyl-1-phenyl-1H-pyrazolo[4,3-d]oxazole-5-carboxaldehyde 

Relevant academic research and scientific papers

Synthesis and Electronic Absorption Spectra of Some Five-Membered Bisheterocyclic Polymethine Cyanine Dyes

3,5-Dimethyl-1-phenyl-1H-pyrazolooxazole 5 was prepared and used as starting material in the synthesis of some polymethine cyanine dyes incorporating a biheterocyclic system.The chemical structure of the new polymethine cyanines were identified based on their elemental analysis and spectral data.The electronic absorption spectra of the synthesized cyanine dyes are discussed.

Synthesis of Pyrazolooxazoles

1-Phenyl-3-methyl-5-pyrazolone-4-oxime reacted with benzylamine, methylamine, methyl- and ethyl iodides to give 3-methyl-1,5-diphenyl-1H-, 3-methyl-1-phenyl-1H- and 3,5-dimethyl-1-phenyl-1H-pyrazolooxazoles I,II.The structure of I was elucidated authentically through other routes by interaction of 1-phenyl-3-methyl-4,5-dioxopyrazolone with benzylamine and/or benzaldehyde and ammonium acetate.Various 3-methyl-5-aryl-1-phenyl-1H-pyrazolooxazoles IV were synthesized by the reaction of 4,5-dioxopyrazolone with aromatic aldehydes in the presence of ammonium acetate.Also, the structure of I was elucidated authentically via other routes by the reaction of 1-phenyl-3-methyl-4-imino-5-pyrazolone with each of benzylcyanide, benzylamine, benzaldehyde and benzalaniline.