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The synthesis of 5-acyl-4-aryl(alkyl)-2-aryl-1,2,3-triazole 1-oxides by lead tetraacetate oxidation of mono- and bisarylhydrazones of α-hydroxyimino-β-diketones

✍ Scribed by Constantina P. Hadjiantoniou-Maroulis; Vassiliki Ikonomou; Evi Parisopoulou


Book ID
112131520
Publisher
Journal of Heterocyclic Chemistry
Year
1996
Tongue
English
Weight
286 KB
Volume
33
Category
Article
ISSN
0022-152X

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6,7-Dimethoxy-2-phenyl-4H-l,3-benzothiazine (la) was oxidized with hydrogen peroxide to yield [2,2'-bis(benzoyIaminomethyl)-4,4',5,5'-tetramethoxyldiphenyl disulfide (2). Potassium permanganate oxidation of Aa gave 6,7-dimethoxy-2-phenyl-4B-1,3benzothiazinll-one (5a), wKch was oxidized with the calc