Synthesis of Unsymmetrically and Highly Substituted Thiophenes Utilizing Regioselective Ring-expansion ofgem-Dichlorocyclopropyl Ketones with Lawesson’s Reagent
Sequential and regioselective Friedel–Crafts reactions of gem-dihalogenocyclopropanecarbonyl chlorides with benzenes for the synthesis of 4-aryl-1-naphthol derivatives