Synthesis of Large [2]Rotaxanes. The Relationship between the Size of the Blocking Group and the Stability of the Rotaxane

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• 作者：Shinichi Saito ; Eiko Takahashi ; Kouta Wakatsuki ; Kazuhiko Inoue ; Tomoko Orikasa ; Kenta Sakai ; Ryu Yamasaki ; Yuichiro Mutoh ; Takeshi Kasama
• 刊名：The Journal of Organic Chemistry
• 出版年：2013
• 出版时间：April 19, 2013
• 年：2013
• 卷：78
• 期：8
• 页码：3553-3560
• 全文大小：377K
• 年卷期：v.78,no.8(April 19, 2013)
• ISSN：1520-6904

文摘

[2]Rotaxanes with large macrocyclic phenanthrolines were prepared by the template method, and the stability of the rotaxanes was examined. Compared to the tris(biphenyl)methyl group, the tris(4-cyclohexylbiphenyl)methyl group was a larger blocking group, and the rate of the dissociation of the components decreased significantly when the thermal stability of a rotaxane with a 41-memebered ring was examined. We also succeeded in the synthesis of larger rotaxanes by the oxidative dimerization of alkynes with these bulky blocking groups, utilizing the catalytic activity of the macrocyclic phenanthroline鈥揅u complex.