1,4-Asymmetric induction in the formation of cyclohexadienones by chirality transfer from a transiently installed chromium–stereospecific electrocyclic ring closure of a metal complexed vinyl ketene

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Abstract
The cyclohexadienone annulation of a β,β-disubstituted vinyl chromium carbene complex and a chiral prop-2-ynylic ether results in high 1,4-asymmetric induction at the newly formed quaternary carbon; the stereochemical information from the prop-2-ynylic ether is initially transfered to the chromium coordination sphere and then to the quaternary carbon of the cyclohexa-2,4-dienone.
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