Abstract: A catalyst composition useful in preparing 3,3,3-trifluoropropene by the reaction of hydrogen fluoride gas with a halogenated hydrocarbon is provided. A novel catalyst is prepared by simultaneous fluorination of chromium and aluminum oxides. This or conventional chromium oxyfluoride compounds may additionally be activated by contact with chlorine or pentachloroethane. A process for the preparation of 3,3,3-trifluoropropene is also contemplated.

Abstract: Olefinic compounds are made from their vicinally chlorinated organic precursors by dechlorination with metallic magnesium in the presence of a mercury-based promoter, which may be a water-soluble mercury salt or metallic mercury, and of a catalytic amount of iodine. This process is particularly suitable for dechlorinating 4,5-dichloro-dioxolanes to the corresponding dioxoles. 4,5-Difluoro-2,2 bis(trifluoromethyl)-1,3-dioxole, which can be made by this process in a reproducible manner from 4,5-dichloro-4,5-difluoro-2,2-bis(trifluoromethyl)-1,3-dioxolane, is a useful monomer for making amorphous homopolymers and copolymers with tetrafluoroethylene, which are well suited for wire coating, finishes, and transparent glazing for corrosive service.

Abstract: Unsaturated eicosanoic acids and derivatives thereof which inhibit the synthesis of SRS-A are useful for treating and preventing asthma and allergic responses caused by SRS-A as well as useful in inhibiting inflammation.