Synthesis and Biological Activity of 11-(4-(Cinnamyl)-1-piperazinyl)-6,11-dihydrodibenz(b,e)oxepin Derivatives, Potential Agents for the Treatment of Cerebrovascular Disorders.
Abstract Friedel–Crafts cyclization products were obtained using 1.1 equivalents of environmentally benign trichloroacetic anhydride as sole reagent and solvent. The resulting ketones included benzothiepins, benzothiopyrans, benzoxepins, dibenzothiepins, dibenzoxepins, and tetralones.