Synthesis p. 394 - 395 (1989)
Update date:2022-08-04
Topics:
Hellwinkel, D.
Karle, R.
ortho-Lithiated N,N-diphenylbenzenesulfonamides 6 react with aromatic nitriles and N,N-dimethylcarbamonitrile, respectively, to give directly the corresponding 3-substituted 1,2-benzisothiazole-1,1-dioxides 8a-f.Other cyano compounds only transfer the cyano group or its ligands to generate the o-substituted benzenesulfonamides 9a-d.
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