Abstract Seven new substituted 5-phenoxy-1, 2, 4-dithiazole-3-ones were prepared in modest yield (53–76%) from corresponding O-phenyl thiocarbamates and chlorocarbonylsulfenyl chloride in dry ether at− 10 C. All of the compounds were characterized by NMR and elemental analysis and some of them by X-ray diffraction. Preliminary kinetic measurements showed that the parent 5-phenoxy-1, 2, 4-dithiazole-3- ...