Use of Polytetrafluoroethylene in Thermal Reactions
V. E. PLATONOV
Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences,
Pr. Akademika Lavrentyeva 9, Novosibirsk 630090 (Russia) E-mail: platonov@nioch.nsc.ru
Pages: 619-624
Abstract
Pyrolysis reactions of polytetrafluoroethylene (PTFE) proceeding under various conditions and giving rise to perfluoroolefins and perfluorocyclobutane together with perfluoroalkanes, perfluorocyclopentenes, and perfluoromethylbenzenes are considered. Methods for the preparation the simplest homologs of perfluoroarenes, namely, perfluoromethylarenes with one to three trifluoromethyl groups (perfluorinated methylbenzenes, methyldiphenyls, methylnaphthalenes, methylindans, and methylpyridines) by co-pyrolysis of PTFE with perfluoroarenes have been developed. Data on co-pyrolysis of chloropentafluorobenzene with PTFE generating perfluoromethylbenzenes, chloroperfluoromethylbenzenes, and perfluoroindan are considered. Routes involving difluorocarbene and leading to perfluorocyclopentenes, perfluoromethylarenes, chloroperfluoromethylbenzenes, and perfluoroindan are discussed.
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