Synthesis of spiroindolenine-3,3′-pyrrolo[2,1-b]quinazolinones through gold(i)-catalyzed dearomative cyclization of N-alkynyl quinazolinone-tethered indoles

An efficient gold( i )-catalyzed dearomative cyclization of N -alkynyl quinazolinone-tethered C2-substituted indoles to prepare various spiroindolenine-3,3′-pyrrolo[2,1- b ]quinazolinones in good to excellent yields is reported.