Formation of 9,9′:9′,9″-Terfluorenyl Isomers Using Metalated Fluorenes as Synthetic Intermediates
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概要
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Rotational isomers of 9,9′: 9′,9″-terfluorenyl were obtained by the addition of 9-lithiofluorene to 9,9′-bifluorenylidene (III). 2,7-Dibromo- (VI) and 2,7,2″,7″-tetrabromo-9′,9″-terfluorenyl (VIII) resulted from similar reactions of the corresponding bromo-derivatives. 9-Lithio-9,9′-bifluorenyl was treated with 9-bromo-9,9′-bifluorenyl to give 9,9′-bis(9,9′-bifluorenyl) (X), 9,9′: 9′,9″-terfluorenyl isomers (mp 293 °C (dec) (I) and mp 257 °C (dec) (II)), 9,9′-bifluorenyl (IX), III, and fluorenone. The isomerization of I by metallic potassium gave the other rotamer II, which decomposed into its components, IX, III, and fluorene (IV).
- 公益社団法人 日本化学会の論文
著者
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Minabe Masahiro
Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University
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Suzuki Kazuo
Departmens Of Oral Histology Matsumoto Dental College
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Suzuki Kazuo
Department of Industrial Chemistry, Faculty of Technology, Utsunomiya University
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