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Chalcogenation of the 1,4-C 2 P 4 Ring: Oxidation, Isomerization, Insertion, and Ring Contraction

✍ Scribed by Elder, Philip J. W.; Chivers, Tristram

Book ID
120470926
Publisher
American Chemical Society
Year
2013
Tongue
English
Weight
654 KB
Volume
52
Category
Article
ISSN
0020-1669

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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