Dehalogenative aromatization of perchlorofluoroalicyclic compounds C6Cl6F6, C10Cl8F8 and C5Cl4F5N in the vapour phase or in solution
摘要:
Dehalogenation of perhalogenated cyclohexanes C6Cl6F6, 1-azacyclohexenes C5Cl4F5N and bicyclo[4.4.0]dec-1(6)-enes C10Cl8F8 in the vapour phase over iron filings at 350-500 degreesC and in solution with Zn and additivities (Cu, NiCl2.6H(2)O + bpy) at 80 degreesC (heterogeneous reaction) or with P(NEt2)(3) at 20 degreesC (homogeneous reaction) was studied. In all cases, perfluoroarenes, chloroperfluoroarenes and dichloroperfluoroarenes (benzenes, naphthalenes and pyridines) were obtained in good overall yield. (C) 2004 Elsevier B.V. All rights reserved.
THE application of gasâliquid partition chromatography to organic fluorine chemistry1,2 has enabled us to extend our studies on dehydrofluorination to a nonafluorocyclohexane (I) (b.p. 92°) which has been obtained3,4 by passage of benzene vapour over cobaltic fluoride at about 150°. With concentrated aqueous potassium hydroxide, this polyfluoride (I) gave a complex mixture (b.p. 60â90°) which was shown by analytical gas-chromatography to contain nine individual components. These were separated by use of the preparative-scale gas chromatographic column, and the structures of some of them have been determined by spectroscopic examination, oxidative degradation, addition reactions, etc.
Dehalogenative aromatization of perchlorofluoroalicyclic compounds C6Cl6F6, C10Cl8F8 and C5Cl4F5N in the vapour phase or in solution
作者:Vadim V. Bardin、Dmitrii V. Trukhin、Nicolay Yu. Adonin、Vladimir F. Starichenko
DOI:10.1016/j.jfluchem.2004.04.015
日期:2004.10
Dehalogenation of perhalogenated cyclohexanes C6Cl6F6, 1-azacyclohexenes C5Cl4F5N and bicyclo[4.4.0]dec-1(6)-enes C10Cl8F8 in the vapour phase over iron filings at 350-500 degreesC and in solution with Zn and additivities (Cu, NiCl2.6H(2)O + bpy) at 80 degreesC (heterogeneous reaction) or with P(NEt2)(3) at 20 degreesC (homogeneous reaction) was studied. In all cases, perfluoroarenes, chloroperfluoroarenes and dichloroperfluoroarenes (benzenes, naphthalenes and pyridines) were obtained in good overall yield. (C) 2004 Elsevier B.V. All rights reserved.
The Action of Elementary Fluorine upon Aromatic Organic Compounds. II. The Fluorination of Hexachlorobenzene