Department of Analytical Chemistry, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Strasse 8, D-48149, Münster, Germany
Abstract:
The synthesis of eleven environmentally relevant mono-, di- and trichlorodibenzothiophenes (2) by photochemical ring-closure of polychlorodiphenylsulfides (1) is described. All monochlorodibenzothiophenes were additionally synthesized starting with a chlorothiophenol in a three-step reaction adapted from the synthesis of methyldibenzothiophenes.