Synthesis of 4-trifluoromethyl-2H-chromenesviathe reaction of 2-(trifluoroacetyl)phenols with vinyltriphenylphosphonium chloride

New synthesis of 4-trifluoromethyl-2 H -chromenes via the reaction of 2-(trifluoroacetyl)phenols with vinyltriphenylphosphonium chloride provides a reliable and prompt access to various substituted at the benzene ring 4-trifluoromethyl-2 H -chromenes.