SEARCH Articles Figures Tables A Friedel-Crafts cyclization Benzofurans, Friedel-Crafts cyclization Friedel cyclization Friedel-Craft-like cyclization Friedel-Crafts alkylation cyclization Friedel-Crafts coupling cyclization Friedel-Crafts cyclization Bischler-Napieralski Friedel-Crafts cyclization reaction Friedel-Crafts cyclization, improved Friedel-Crafts cyclizations Friedel-Crafts cyclizations Friedel-Crafts reactions acid-promoted cyclization Friedel-Crafts-type cyclization Intramolecular Friedel-Crafts cyclization Intramolecular Friedel-Crafts-type cyclization Propanoic acid, 3 - Friedel-Crafts reaction cyclization Sulfones Friedel-Crafts cyclization