273. F. Giacomina, D. Riat, A. Alexakis,
     “ω-Ethylenic Allylic Substrates as Alternatives to Cyclic Substrates in Copper- and Iridium-Catalyzed Asymmetric Allylic Alkylation”
     Org. Lett. 2010, 12, 1156-1159.

A new strategy to access highly enantioenriched cyclic compounds (up to 98%) is proposed using ω-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.

DOI : 10.1021/ol100162y 

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