ω-Ethylenic Allylic Substrates as Alternatives to Cyclic Substrates in Copper- and Iridium-Catalyzed Asymmetric Allylic Alkylation

A new strategy to access highly enantioenriched cyclic compounds (up to 98%) is proposed using omega-ethylenic allylic substrates through a one-pot asymmetric allylic alkylation and ring-closing metathesis. Such starting compounds can be seen as synthetic equivalents of cyclic allylic substrates.