The Diphenylboryl Hexachloroantimonate Promoted Friedel–crafts Acylation Reaction

In the presence of a catalytic amount of diphenylboryl hexachloroantimonate(Ph2BSbCl6), acid chlorides or acid anhydrides react smoothly with aromatic compounds such as anisole and veratrole to give the corresponding aromatic ketones in good yields under mild conditions. Diphenylboryl hexachloroantimonate also activates acyl enolates in the Friedel–Crafts acylation reaction to give the aromatic ketones in good yields under almost neutral conditions.