Tetrahedron Letters

Synthesis of 2H-1, 4-benzothiazin-3 (4H)-ones and 2H-1, 4-benzoselenazin-3 (4H)-ones with the aid of samarium (II) iodide

W Zhong, Y Zhang

Index: Zhong, Weihui; Zhang, Yongmin Tetrahedron Letters, 2001 , vol. 42, # 17 p. 3125 - 3127

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Citation Number: 13

Abstract

Bis (o-nitrophenyl) disulfides or diselenides were easy to reduce by samarium (II) iodide to produce the active intermediates 2 in situ, which readily react with α-halocarboxylic derivatives to yield the corresponding products 2H-1, 4-benzothiazin-3 (4H)-ones and 2H-1, 4-benzoselenazin-3 (4H)-ones, respectively, in moderate to high yields under mild conditions.