Diastereoselective dearomative bifunctionalization of isoquinolinium salts to access bridged tetrahydroisoquinolines†

Herein, we report a diastereoselective dearomative bifunctionalization strategy of using isoquinolinium salts to access bridged tetrahydroisoquinolines. The strategy relies on the strategic use of allenes and amines as reaction partners to generate binucleophilic species in situ for subsequent dearomatization.