Synthesis of bifluorenes via cobalt halide radical coupling
作者:Malik H. Al-Afyouni、Tiffany A. Huang、Fernando Hung-Low、Christopher A. Bradley
DOI:10.1016/j.tetlet.2011.03.127
日期:2011.6
Reaction of in situ generated lithium fluorenide salts with cobalt chloride results in formation of the corresponding bifluorenes. The scope of fluorenes that can be coupled include those containing substituents amenable to polymerization for application to poly(bifluorene) synthesis and alkyl substituted fluorenes for use in the preparation of bimetallic transition metal complexes. Based on experiments
Synthesis of gem-9,9-dilithiofluorene by thermal rearrangement
作者:Harendra P. S. Chauhan、Hajimu Kawa、Richard J. Lagow
DOI:10.1021/jo00359a059
日期:1986.5
Preparation of bifluorenes via the synthesis and thermal decomposition of fluorenyltitanium(IV) trichlorides. Molecular and crystal structure of 9,9′-bis(trimethylsilyl)-bi-9,9′-fluorene
作者:Sergei Ya. Knjazhanski、Guillermo Moreno、Gregorio Cadenas、Vitalii K. Belsky、Boris M. Bulychev
DOI:10.1016/s0040-4020(98)01208-3
日期:1999.2
The reaction of B-substituted trimethyltinfluorenes with TiCl4 in hexanes at -40 degrees C leads to unstable fluorenyltitanium(IV) trichlorides which thermal radical decomposition gives quantitatively TiCl4 and corresponding bifluorenes: (C13H9)(2) (3a), (9-EtC13H8)(2) (3b) and (9-SiMe3C13H8)(2) (3c). Crystals of 3c are monoclinic (space group P 2(1)/n), a= 15.059 Angstrom, b= 10.254 Angstrom, c= 18.172 Angstrom, beta= 109.20 deg. IIIc dissociates at 100 degrees C to give two radicals which initiate effectively radical polymerizations of methyl methacrylate and styrene. (C) 1999 Elsevier Science Ltd. All rights reserved.
HILLGAERTNER H.; NEUMANN W. P.; SCHULTEN W.; ZARKADIS A. K., J. ORGANOMETAL. CHEM., 1980, 201, NO 1, 197-211
作者:HILLGAERTNER H.、 NEUMANN W. P.、 SCHULTEN W.、 ZARKADIS A. K.
DOI:——
日期:——
CHAUHAN, H. P. S.;HAJIMU, KAWA;LAGOW, R. J., J. ORG. CHEM., 1986, 51, N 9, 1632-1633