Enantioselective access to spiro[2,3-dihydrofuran-2,2′-inden-1-ones]viazinc catalyzed [3 + 2] annulation of α-hydroxy-1-indanones with yne–enones

An enantioselective construction of spiro[1-indanone-dihydrofurans] has been accomplished through zinc-catalyzed [3 + 2] annulation via a Brønsted base and Lewis acid cooperative activation model.