Abstract
AbstractAn efficient enynylation of N‐sulfonyl aldimines is described herein. In the presence of Zn‐BINOL complexes, catalytic enantioselective addition reactions of terminal 3‐en‐1‐ynes to N‐sulfonyl aldimines proceed smoothly to produce enynylated carbinamines in up to 96 % yield and 95 % ee. The adducts are versatile synthetic intermediates that readily undergo Pauson–Khand cycloaddition reactions to give polycyclic products that are otherwise difficult to access.
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