Octaalkyl tetracene-1,2,3,4,7,8,9,10-octacarboxylates: synthesis by twofold [2+2+2] cocyclization and crystallochromy |
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| Authors: | Kitamura Chitoshi Takenaka Akira Kawase Takeshi Kobayashi Takashi Naito Hiroyoshi |
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| Affiliation: | Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-22, 80, Japan. kitamura@eng.u-hyogo.ac.jp |
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| Abstract: | Tetracene octaesters, which were prepared by twofold [2+2+2] cocyclization, were isolated as red, orange, and orange-yellow solids for the methyl, ethyl, and propyl ester derivatives, respectively. X-Ray crystallographic analysis reveals that the difference in solid-state color arises owing to differences in molecular packing. |
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