Thermolytic transformations of polyfluoroorganic compounds
摘要:
The reaction of alpha,alpha-dichlorooctafluoroethylbenzene with tetrafluoroethylene as a source of difluorocarbene has been studied. The copyrolysis of these compounds gave not only the expected products, decafluoro-alpha-methylstyrene and alpha-chloroheptafluorostyrene, but also noticeable amounts of perfluoro-1-methylindan and perfluoro-7-methylbicyclo[4.3.0]nona-1,4,6-triene along with perfluoro-3-methylindene and octafluorostyrene. It has been suggested that indan and the triene are formed with the participation of the C6F5CClCF3 radical through sigmatropic shifts of fluorine atoms in the intermediate bicyclic compounds. The reaction of alpha,alpha-dichlorodecafluoropropylbenzene with tetrafluoroethylene afforded alpha-chloroheptafluorostyrene as the main product.
Thermolytic transformations of polyfluoroorganic compounds XXIX. Formation of fluorine-containing styrenes by reactions of benzotrichloride and related compounds with dihalocarbene sources
作者:K.V. Dvornikova、V.E. Platonov、G.G. Yakobson
DOI:10.1016/s0022-1139(00)85196-9
日期:1985.5
Reactions of polyfluorobenzotrichlorides, benzotrichloride and α,α-dichloroperfluoroethylbenzene with sources of difluorocarbene and other dihalocarbenes lead to the formation of polyfluorostyrenes. Formation of polyfluorostyrenes is shown to proceed possibly by initial dihalocarbene insertion into the CCl bond of the benzylic position with subsequent dechlorination of the resulting product.