Synthesis of bridgehead-functionalized triptycene quinones via Lewis acid–promoted Diels-Alder reaction of 9-acyloxyanthracenes

Abstract Herein, we show that bridgehead-functionalized triptycene quinones can be rapidly and conveniently prepared in good to high yields by Lewis acid–catalyzed cycloaddition of 1,4-benzoquinones and 1,4-naphthoquinones to 9-acyloxyanthracenes and probe the substrate scope of this transformation.