A new iron-catalyzed reaction for the coupling of perfluoroalkyl iodides with aromatic substrates is described.
描述了一种新的铁催化的反应,用于偶联全氟烷基碘化物和芳香基底物。
POLYMER COMPOUND AND COMPOSITION CONTAINING THE SAME
申请人:Mikami Satoshi
公开号:US20100033086A1
公开(公告)日:2010-02-11
A polymer compound comprising as repeating units an optionally substituted fluorenediyl group and a phenylene group having one or more substituents, and comprising a repeating unit of the following formula (1) and/or a group of the following formula (2):
(in the formula (1), Ar
1
and Ar
2
represent an arylene group or di-valent aromatic heterocyclic group, and Ar
1
and may be the same or different.)
(in the formula (2), Ar
1
represents the same meaning as described above. Ar
3
represents an aryl group or mono-valent aromatic heterocyclic group.).
Redox system for perfluoroalkylation of arenes and α-methylstyrene derivatives using titanium oxide as photocatalyst
作者:Mari Iizuka、Masato Yoshida
DOI:10.1016/j.jfluchem.2009.07.010
日期:2009.10
Photoirradiation of titanium oxide (TiO2) excites the electrons from the valence band to the conduction band, leaving holes in the valence band. Using these holes and electrons, it is possible to perform one-electron oxidations and reductions. We developed a method for the photocatalytic perfluoroalkylation of aromatic rings such as benzene and its derivatives, naphthalene and benzofuran with perfluoroalkyl iodide by the combination of reduction and oxidation reactions with TiO2. Perfluoroalkyl iodide was reduced to a perfluoroalkyl radical by the excited electrons in the conduction band of TiO2, and the resulting radical reacted with an aromatic ring to form an arenium radical that was successively oxidized to a cation by the holes in the valence band of TiO2. Similarly, the photocatalytic reaction of alpha-methylstyrene with perfluoroalkyl iodide afforded perfluoroalkylated alpha-methylstyrene, in which the perfluoroalkyl group is on a methyl carbon. (C) 2009 Elsevier B.V. All rights reserved.
Kamigata, Nobumasa; Ohtsuka, Takeshi; Fukushima, Takamasa, Journal of the Chemical Society. Perkin transactions I, 1994, # 10, p. 1339 - 1346