Formation of 9, 9′: 9′, 9 ″-Terfluorenyl Isomers Using Metalated Fluorenes as Synthetic Intermediates

M Minabe, K Suzuki

Index: Minabe,M.; Suzuki,K. Bulletin of the Chemical Society of Japan, 1975 , vol. 48, p. 1301 - 1303

Full Text: HTML

Citation Number: 4

Abstract

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) ...