Cross-Coupling Reactions of Two Different Activated Alkenes through Tetrabutylammonium Fluoride (TBAF) Promoted Deprotonation/Activation Strategy: A Regioselective Construction of Quaternary Carbon Centers
摘要:
A novel TBAF-promoted intermolecular crossed-conjugate addition has been developed. For a range of cyclic beta-halo-alpha,beta-unsaturated carbonyl compounds, the vinylogous enolates generated by deprotonation at the gamma-position preferentially reacted with Michael acceptors at the alpha-position to deliver cross-coupling products in good yields.