Fulvenes as Effective Dipolarophiles in Copper(I)‐Catalyzed [6+3] Cycloaddition of Azomethine Ylides: Asymmetric Construction of Piperidine Derivatives

As easy as π: Fulvenes serve as 6π dipolarophiles in the title reaction in the presence of the chiral CuI/(S)-L complex. The present system provides a unique and straightforward access to enantioenriched, highly functionalized piperidine derivatives in good yields and excellent diastereoselectivities and enantioselectivities.