Non-stereospecific ring expansions of 5-membered heterocyclic sulfoxides |
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| Authors: | Norihiro Ueda Hiroshi Shimizu Tadashi Kataoka Mikio Hori |
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| Institution: | Gifu College of Pharmacy, 6-1, Mitahora-higashi 5-chome, Gifu 502, Japan |
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| Abstract: | Non-stereospecific ring expansion reactions of 5-membered heterocyclic sulfoxides, 1,3-benzoxathiole sulfoxides, 1,3-benzodithiole sulfoxides, and 1,3-dithiolane sulfoxides having a heteroatom at β-position to the sulfinyl group with acetic anhydride or p-toluenesulfonic acid are described together with thier reaction mechanism involving a sulfonium ion intermediate. |
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