A novel synthetic approach to 4-acetamido-1-arylindazoles via Semmler–Wolff rearrangement of 1-aryl-6,7-dihydro-5H-indazol-4-one oxime

A novel synthetic approach to 4-acetamido-1-arylindazoles via Semmler–Wolff rearrangement of 1-aryl-6,7-dihydro-5H-indazol-4-one oxime

A simple and efficient procedure for the syntheses of 4-acetamido-1-arylindazoles from corresponding 1-aryl-6,7-dihydro-5H-indazol-4-one oximes by Semmler–Wolff aromatization using acetic anhydride and sodium iodide is reported.

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Veröffentlicht in:Tetrahedron letters 2014-05, Vol.55 (22), p.3348-3350
Hauptverfasser: Manjunatha, Sulur G., Bachu, Sreekanth, Kadambar, Vasantha Krishna, Murugan, Andiappan, Ramasubramanian, Sridharan, Ramachandra, Puranik, Nambiar, Sudhir
Format: Artikel
Sprache:eng
Schlagworte:
4-Acetamido-1-phenylindazole
Acetic anhydride
Anhydrides
Dihydroindazol-4-one
Oximes
Semmler–Wolff aromatization
Sodium iodide
Sodium iodides
Tetrahedrons
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Zusammenfassung:A simple and efficient procedure for the syntheses of 4-acetamido-1-arylindazoles from corresponding 1-aryl-6,7-dihydro-5H-indazol-4-one oximes by Semmler–Wolff aromatization using acetic anhydride and sodium iodide is reported.
ISSN:0040-4039
1873-3581
DOI:10.1016/j.tetlet.2014.04.058