Abstract
AbstractThe rhodium(I)‐catalyzed cycloisomerization of enynes with tethered (S)‐2‐methyl‐2‐propanesulfinyl imine affords 5‐ or 6‐membered cyclic compounds containing exocyclic 1,3‐diene moieties in a stereoselective manner. The reaction proceeds through β‐hydride elimination of a 7‐membered azarhodacycle intermediate, which is generated from three unsaturated bonds (i.e., alkene, alkyne, and CN bonds) and an Rh(I) complex. The resultant cyclic compounds could be reacted with various dienophiles to afford spiroamides as single isomers through the Diels–Alder reaction.magnified image
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