N-(2-Alkoxycarbonylbenzenesulfenyl)benzimidazoles as Nitrogen-, Sulfur-, and Carbon-Sulfenylation Reagents
摘要:
N-(2-Alkoxycarbonylbenzenesulfenyl)benzimidazoles reacted with nucleophiles such as amides, imidates, thiols, Grignard reagents, and active methylene compounds to yield the corresponding sulfenylated products: N-acylsulfenamides, N-sulfenylimidates, disulfides, sulfides, and sulfenylated active methylene compounds, respectively.
Reactions of N-[2-(alkoxycarbonyl)benzenesulfenyl]-1,2-benzisothiazolin-3-ones (1) with various nucleophiles were examined. Anions of active methylene compounds attacked the sulfur atoms of the suffenyl moieties of I to afford sulfide compounds, while thiols attacked the sulfur atoms of the benzisothiazolinone moieties of 1 to afford ring-opened products. Grignard reagents attacked both the above sulfur atoms to give ring-opened products along with sulfide compounds. (C) 2004 Published by Elsevier Ltd.