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Premium Synthesis of pyrazolo[4,3‐ d ]oxazoles
Youssef M. S. K.,
Metwally S. A. M.,
ElMaghraby M. A.,
Younes M. I.
Publication year1984
Publication title
journal of heterocyclic chemistry
Resource typeJournals
Abstract 1‐Phenyl‐3‐methyl‐5‐pyrazolone‐4‐oxime reacted with benzylamine, methylamine, methyl‐ and ethyl ioides to give 3‐methyl‐1,5‐diphenyl‐1 H ‐, 3‐methyl‐1‐phenyl‐1 H ‐ and 3,5‐dimethyl‐1‐phenyl‐1 H ‐pyrazolo[4,3‐ d ]oxazoles 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‐meth‐yl‐5‐aryl‐1‐phenyl‐1 H ‐pyrazolo[4,3‐ d ]oxazoles 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.
Subject(s)alkyl , ammonium acetate , aryl , benzaldehyde , benzylamine , catalysis , chemistry , high performance liquid chromatography , medicinal chemistry , methylamine , organic chemistry , pyrazolone
SCImago Journal Rank0.321

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