Accession Number : ADA139195

Title :   Aerosol Direct Fluorination: Syntheses of the Highly Branched Ketones, F-Pinacolone and F-Provalone.

Descriptive Note : Technical rept.,


Personal Author(s) : Adcock,J L ; Robin,M L

PDF Url : ADA139195

Report Date : 31 Jan 1983

Pagination or Media Count : 16

Abstract : The extension direct fluorination techniques to the syntheses of the here-to-fore unknown highly branched perfluoroketones F-3,3-dimethyl-2-butanone (F-pinacolone) and F-2,2,5-trimethyl-3-hexanone (F-provalone) from 3,3-dimethyl-2-butanone (pinacolone) and 2,2,4,4-tetramethyl-3-pentanone (pivalone) respectively demonstrates again the efficacy of the aerosol direct fluorination process for the synthesis of perfluoroketones directly from ketones. The interesting rearrangement of the hydrocarbon di-tert-butyl ketone (pivalone) to the perfluorinated tert-butyl ketone, F-provalone is unprecedented in our experience and does not occur at the monofluorination step but later in the fluorination. Isolated yields of 12% and 9% though modest are unadjusted by physical losses of recoverable hydrocarbons present at the termination of the reaction. Perfluorinated product distributions, concentrations of products collected from the reactor effluent, are 23% and 71% of the total material traversing the reactor. (Author)

Descriptors :   *Aerosols, *Fluorination, *Synthesis(Chemistry), *Ketones, Fluorine, Methyl radicals, Butanones, Hydrocarbons, Concentration(Chemistry)

Subject Categories : Organic Chemistry
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE