Click Annulation of Pseudo[2]rotaxane to [2]Catenane Exploiting Homoditopic Nitrile N-Oxide

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• 作者：Tatsuya Yuki ; Yasuhito Koyama ; Tohru Matsumura ; Toshikazu Takata
• 刊名：Organic Letters
• 出版年：2013
• 出版时间：September 6, 2013
• 年：2013
• 卷：15
• 期：17
• 页码：4438-4441
• 全文大小：282K
• 年卷期：v.15,no.17(September 6, 2013)
• ISSN：1523-7052

文摘

A mild annulation reaction of a propargyl-terminated pseudorotaxane with a homoditopic stable nitrile N-oxide enabled the efficient synthesis of catenanes consisting of not only dibenzo-24-crown-8-ether (DB24C8) but also dibenzo-30-crown-10-ether (DB30C10) as a wheel component. A dynamic ¹H NMR study showed the highly enhanced mobility of the components of the DB30C10-based [2]catenane due to the enlarged wheel cavity.