Biradical with a polyfluorinated terphenylene backbone
作者:P. A. Fedyushin、A. A. Serykh、A. S. Vinogradov、T. V. Mezhenkova、V. E. Platonov、D. I. Nasyrova、A. I. Samigullina、M. V. Fedin、I. A. Zayakin、E. V. Tretyakov
DOI:10.1007/s11172-022-3577-0
日期:2022.8
A method was developed for the synthesis of perfluoro-1,1′:4′,1″-terphenyl by the reaction of chloroperfluorobenzene with zinc dust followed by the reaction of the resulting mixture of C6F5ZnCl and (C6F5)2Zn with decafluorobiphenyl in the presence of KF. The reaction of perfluoro-1,1′:4′,1″-terphenyl with tert-butylamine in an autoclave gives the aminodefluorination product, 4,4″-bis(tert-butylamino)perfluoro-1,1′:4′,1″-terphenyl, and the oxidation of the latter with m-chloroperbenzoic acid affords a new stable nitroxide biradical 4,4″-bis(N-tert-butyl-N-oxylamino)perfluoro-1,1′:4′,1″-terphenyl in quantitative yield. The molecular and crystal structures of the diamine and the biradical were established by X-ray diffraction. According to the X-ray diffraction data, the planes of the paramagnetic moieties and the aromatic rings are significantly rotated with respect to each other, resulting in weak intramolecular exchange interactions between the paramagnetic centers.
A fluorine-containing resin composition comprising at least one fluorine-containing polycyclic compound (A) selected from the group consisting of the following compounds (A1), (A2) and (A3), and a polymer (B) having a fluorine-containing alicyclic structure:
(A1) a fluorine-containing non-condensed polycyclic compound having at least two fluorine-containing rings bonded by a bond containing at least one member selected from the group consisting of a triazine ring, an oxygen atom, a sulfur atom, a phosphorus atom and a metal atom, each of said fluorine-containing rings being a carbon ring or a heterocyclic ring, of which some or all of hydrogen atoms are substituted by a fluorine atom or a fluorine-containing group;
(A2) a fluorine-containing non-condensed polycyclic compound having at least three fluorine-containing rings bonded directly or by a bond containing a carbon atom, each of said fluorine-containing rings being a carbon ring or a heterocyclic ring, of which some or all of hydrogen atoms are substituted by a fluorine atom or a fluorine-containing group;
(A3) a fluorine-containing condensed polycyclic compound which is a condensed polycyclic compound composed of at least three carbon rings or heterocyclic rings, of which some or all of hydrogen atoms are substituted by a fluorine atom or a fluorine-containing group.
Formation of perfluorinated polyphenylenes by multiple pentafluorophenylation using C6F5Si(CH3)3
作者:Masakazu Nishida、Yoshio Hayakawa、Taizo Ono
DOI:10.1016/j.jfluchem.2010.09.001
日期:2010.12
Pentafluorophenylation of perfluoroarenes with C6F5Si(CH3)(3) was investigated by using NMR and MALDI-TOF-MS techniques. Successive multiple pentafluorophenylation easily occurred not only on the para-position but also on the ortho-positions to provide perfluorinated p-phenylene and m-phenylene compounds. The perfluoroarenes having electron-withdrawing substituents provided oligo- to poly-(phenylene)s depending on the added amounts of C6F5Si(CH3)(3), while the perfluoroarenes having electron-donor substituents gave H(C6F4)(n)F polymers produced from C6F5H, which was the decomposed product of C6F5Si(CH3)(3). (C) 2010 Elsevier B.V. All rights reserved.
Shtark, A. A.; Chuikova, T. V.; Shteingarts, V. D., Journal of Organic Chemistry USSR (English Translation), 1984, vol. 20, # 5, p. 960 - 967
作者:Shtark, A. A.、Chuikova, T. V.、Shteingarts, V. D.
DOI:——
日期:——
SHTARK, A. A.;CHUJKOVA, T. V.;SHTEJNGARTS, V. D., ZH. ORGAN. XIMII, 1984, 20, N 5, 1055-1063
作者:SHTARK, A. A.、CHUJKOVA, T. V.、SHTEJNGARTS, V. D.