Synthesis and Structure of Novel 1,8-Bridged Fluorenophanes†

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Akihiko Tsuge, Yasuhiro Ueda, Tadashi Araki Tetsuji Moriguchi, Kazunori Sakata, Keizo Koya, Shuntaro Mataka and Masashi Tashiro


Abstract

A novel 1,8-bridged fluorenophane (4a) is found to assume an $lsquoinward-folded’ conformation with the bulky tert-butyl group located in the cavity, a situation which is different from the conformation of the corresponding dithiafluorenophane (3a).


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