- Fluorination of fluoro-cyclobutene with high-valency metal fluoride
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Fluorinations of 1,4,4-trifluorocyclobutene and 3,3,4,4- tetrafluorocyclobutene using high-valency metal fluorides such as CoF 3, MnF3, AgF2, CeF4 and KCoF 4, and elemental fluorine were examined. In these reactions with CoF3 and MnF3, vic-difluorination proceeded mainly. While, 1,4,4-trifluorocyclobutene yielded 3,3,4,4-tetrafluorocyclobutene, and 3,3,4,4-tetrafluorocyclobutene yielded 1,3,3,4,4-pentafluorocyclobutene mainly in the case of AgF2. The further fluorinated products were increased under severer conditions. Also, the plausible reaction mechanism was suggested.
- Mizukado, Junji,Matsukawa, Yasuhisa,Quan, Heng-Dao,Tamura, Masanori,Sekiya, Akira
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- Reductive dehalogenation of polyhalofluorocarbons with tributyltin hydride
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The reduction of polyhalofluorocarbons, including ClCF2CFClCF2Cl, (ClCF2CFCl)2, ICH2(CF2)3CH2I and vicinal dichloroperfluorocycloalkanes, with tributyltin hydride gave the corresponding hydrofluorocarbons in good to excellent yield.The results are compared with similar reductions with other reducing agents, and to tin hydride reductions of non-fluorinated analogs. - Keywords: Reductive dehalogenation; Polyfluorocarbons; Tributyltin hydride; NMR spectroscopy; Hydrofluorocarbons
- Puy, Michael Van Der,Belter, Randolph K.,Borowski, Ralph J.,Ellis, Lois A. S.,Persichini, Phillip J.,et al.
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