Synthesis of [3]Rotaxanes that Utilize the Catalytic Activity of a Macrocyclic Phenanthroline-Cu Complex: Remarkable Effect of the Length of the Axle Precursor
[3]Rotaxanes, which consist of one macrocyclic phenanthroline compound and two axle components, were prepared by the oxidative dimerization of an alkyne compound with bulky tris[4′‐cyclohexyl‐(1,1′‐biphenyl)‐4‐yl]methyl blocking group. The catalyticactivity of a macrocyclicphenanthroline–Cucomplex was utilized to thread the two axle components inside the ring. The alkyne compound with chain of 15
Synthesis of [2]Catenanes by Intramolecular Sonogashira-Type Reaction
作者:Ken Ito、Yuichiro Mutoh、Shinichi Saito
DOI:10.1021/acs.joc.7b00672
日期:2017.6.16
The catalytic activity of macrocyclic phenanthroline-CuI complexes was utilized to synthesize [2]catenanes by intramolecular Sonogashira-type reaction. The high reactivity of the acyclic starting material was critical to synthesize the [2]catenane in acceptable yields. The relationship between the yield of the [2]catenane and the structure of the starting materials was disclosed.
Synthesis of Large [2]Rotaxanes. The Relationship between the Size of the Blocking Group and the Stability of the Rotaxane
作者:Shinichi Saito、Eiko Takahashi、Kouta Wakatsuki、Kazuhiko Inoue、Tomoko Orikasa、Kenta Sakai、Ryu Yamasaki、Yuichiro Mutoh、Takeshi Kasama
DOI:10.1021/jo302800t
日期:2013.4.19
[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
Rotacatenanes were synthesized by the catalytic reaction using a macrocyclic phenanthroline–CuI complex followed by the installation of another ring by the template method. In this approach, the size of the ring component of the rotaxane turns out to be a very important factor for the synthesis of rotacatenanes.