Synthesis and Structures of Zigzag Shaped [12]Cyclo-p-phenylene Composed of Dinaphthofuran Units and Biphenyl Units
- Takaaki Shouda ,
- Kentaro Nakanishi ,
- Takahiro Sasamori
, - Norihiro Tokitoh ,
- Kouji Kuramochi, and
- Kazunori Tsubaki
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† Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
‡ Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
§ Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
*E-mail: [email protected]
Abstract
A [12]Cyclo-p-phenylene 9 composed of dinaphthofuran units and biphenyl units was synthesized through reductive elimination of the corresponding trinuclear complex by applying Yamago’s method. The X-ray crystallographic analyses of 9 revealed that it adopts a zigzag conformation in the solid state. The UV–vis and fluorescence measurements of compound 9 indicated that it also preferentially took a zigzag conformation in the solution state.
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