Fluoroorganic Syntheses V. Preparation and Transformation of Chlorofluorocyclopropanes.- A Selective Approach to Fluoroallylic Alcohols. Swmmary. Chlorofluorocarbene addition to unsaturated compounds is particularly convenient and efficient in a two-phase system. This method works satisfactorily even if the olefin carrics base-sensitive substituents. The resul- tant chlorofluorocyclopropanes can be ring-opened by silver-salt assisted acetolysis ...