Chirality Transfer Intramolecular Pauson–Khand Reaction with N–C Axially Chiral Sulfonamides Bearing an Ene–Yne Structure

An intramolecular Pauson–Khand reaction with enantioenriched N–C axially chiral N-allyl-N-(2-alkynylphenyl)sulfonamide derivatives proceeded with complete chirality transfer from axial chirality (P configuration) to central chirality (R configuration), affording chiral nitrogen-containing tricyclic compounds (tetrahydrocyclopentaquinolin-2-one derivatives).