Tetrahedron

New synthetic method to 1, 2-benzisothiazoline-3-one-1, 1-dioxides and 1, 2-benzisothiazoline-3-one-1-oxides from N-alkyl (o-methyl) arenesulfonamides

M Katohgi, H Togo, K Yamaguchi, M Yokoyama

Index: Katohgi, Masashi; Togo, Hideo; Yamaguchi, Kentaro; Yokoyama, Masataka Tetrahedron, 1999 , vol. 55, # 52 p. 14885 - 14900

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Citation Number: 35

Abstract

Various N-alkylsaccharins were easily prepared in moderate to good yields by the reaction of N-alkyl (o-methyl) arenesulfonamides with (diacetoxyiodo) benzene in the presence of iodine under irradiation with a tungsten lamp (W-hν). On the other hand, irradiation of N-alkyl (o-methyl) arenesulfonamide derivatives bearing various subslituents on the aromatic ring with a high-pressure mercury lamp (Hg-hν), in the presence of (diacetoxyiodo) benzene ...