Abstract:The first studies on [Ru]‐catalyzed Asymmetric Ring‐Closing Ene‐Yne Metathesis (ARCEYM) are disclosed in this communication. The desymmetrization of achiral ene‐diyne substrates afforded the corresponding exo cyclic compounds in good yields and enantioselectivities (up to 69% ee). The methodology provided a straightforward access to functionalized scaffolds displaying alkyne and diene useful for further functionalization such as [4+2] cycloaddition reaction.
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