Abstract
AbstractAn asymmetric aza‐Diels–Alder and cation–olefin cyclization sequence has been developed to construct cyclopenta[b]piperidine skeletons with moderate yields and excellent stereoselectivities, by employing 5‐enals and N‐Ts‐1‐aza‐1,3‐butadienes as the starting materials. A designed domino cation–olefin/Friedel–Crafts reaction verified that the cyclization of N‐Ts iminium ion underwent a stepwise cationic process.
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