Fluorinated dibenzo-p-dioxins (PFDD) have been selectively synthesized from fluorophenols and isolated by liquid-column- and thin layer chromatography. The structures were confirmed by IR, MS, HR-MS, H-1-NMR and F-19-NMR-spectroscopy. Reaction times, melting points and the IR-absorption bands are presented for several PFDD's as well as H-1- and (19)-F-NMR-spectra for two PFDD's and the mass-spectrum for 2,3,7,8-T4FDD.