A new entry to oxacycles via base-catalyzed endo mode cyclization of allenyl sulfoxides and sulfones |
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| Authors: | Mukai C Yamashita H Hanaoka M |
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| Affiliation: | Faculty of Pharmaceutical Sciences Kanazawa University, Takara-machi, Kanazawa 920-0934, Japan. cmukai@kenroku.kanazawa-u.ac.jp |
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| Abstract: | [reaction: see text]. Treatment of the allenyl sulfoxides and sulfones possessing a proper delta-hydroxy appendage at the C-1 position with potassium tert-butoxide effected endo mode ring closure at the sp-hybridized carbon center of the allenyl moiety to provide the five- to eight-membered oxacycles in high yields. |
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