摘要:
A method of fluorinating an organic compound comprising reacting an organic compound with a fluorinating agent characterized in that a perfluorocarbon compound is present in the reaction medium. The perfluorocarbon compound may replace an amount of a solvent which would otherwise be required for the reaction to proceed efficiently. The perfluorocarbon compound is readily recoverable after reaction and may be re-used in subsequent reactions. Additives to the reaction medium, such as 18-crown-6, may increase the amoun of solvent which may be replaced. The method is beneficial where solvent consumption would otherwise be large, or where solvent recovery would otherwise be difficult.
摘要:
Monomers of the formula (I) (for example, 3,3,4,4,5,5,6,6-octafluoromethylenecyclopentane) are described, as well as copolymers prepared from them and from one or more monomers copolymerizable with them. ##STR1## wherein n=3 to 5 The compounds are suitable for the production of a multiplicity of thermoplastically processable copolymers having various sets of properties which permit applications both as compact moulded parts and as coatings.
摘要:
Cis and trans-1-trifluoromethyl-1,2,2-trifluoro-4methylcyclobutane and mixtures thereof are provided. These compositions are liquids having high dielectric constant and low freezing points, useful as working fluids for hydraulic systems and as inert solvents. Also provided are linear dimers, 4,4,5,6,6,6-hexafluorohexene-1 and 4,4,5,6,6,6-hexafluorohexene2, useful as comonomers in ethylene and propylene polymerization.
摘要:
Certain halogenated cyclobutanes are disclosed which possess utility as inhalation anesthetics. They are: 1-chloro-1,2,2trifluorocyclobutane, 1,4-dichloro-1,2,2-trifluorocyclobutane, 1chloro-1,2,2,4-tetrafluorocyclobutane, 1,4-dichloro-1,2,2,4tetrafluorocyclobutane, 1-chloro-2,2,3,3-tetrafluorocyclobutane, 1,2,2,3,3-pentafluorocyclobutane, 1-chloro-1,2,2,3,3pentafluorocyclobutane, 1,2,2-trifluorocyclobutane, 1-chloro2,3,3-trifluorocyclobutane, 1-chloro-2,4,4-trifluorocyclobutane, 1-bromo-1,2,2-trifluorocyclobutane, 1-bromo-2-methyl-1,4,4trifluorocyclobutane and 1-bromo-2-chloro-1,4,4trifluorocyclobutane.
摘要:
UNSATURATED FLUOROCOMPOUNDS ARE PRODUCED BY A COMBINATION OF STEPS COMPRISING (A) REACTING A PERHALOETHYLENE WITH AN UNSATURATED COMPOUND TO PRODUCE A CORRSPONDING CYCLOBUTANE DERIVATIVE TO OBTAIN THE CORRESPONDING PERFLUOROCYCLOBUTANE DERIVATIVE, (C) PYROLYZING SAID PERFLUOROCYCLOBUTANE DERIVATIVE TO FORM THE UNSATURATED PERFLUOROCOMPOUND AND SAID STARTING PERHALOETHYLENE, AND (D) RECYCLING AT LEAST A PORTION OF SAID PERHALOETHYLENE FORMED IN SAID STEP (C) TO SAID STEP (A).