Carbonyl fluoride is a versatile intermediate to organic fluorine compounds. Its reaction with carbonyl compounds such as cyclohexanone, benzaldehyde and benzophenone gives the gem-difluorides, while N, N-dimethylformamide yields a, a-difluorotrimethylamine. Metal fluoride-catalyzed addition at the ethylenic bond in perfluoroolefins forms perfluoroacyl fluorides, while the C--?! unsaturated compounds CF3X= CF2, CsHsS= CO and CFaC= r': ...