Atsushi Moroda, H. Togo
Apr 1, 2008
Citations
0
Influential Citations
13
Citations
Journal
Synthesis
Abstract
Iodobenzene-catalyzed cyclization of 2-aryl- N-meth-oxyethanesulfonamides with M-chloroperoxybenzoic acid results in the corresponding 1-methoxy-3,4-dihydro-1 H-2,1-benzothiazine 2,2-dioxides in moderate to good yields. In this reaction, reactive hypervalent iodine [(hydroxy)(tosyloxy)iodo]benzene, formed in situ, reacts with the 2-aryl- N-methoxyethanesulfonamides in an electrophilic manner at the aromatic ring to give the corresponding 1-methoxy-3,4-dihydro-1 H-2,1-benzothiazine 2,2-dioxides.