Cross-coupling reactions of two different activated alkenes through tetrabutylammonium fluoride (TBAF) promoted deprotonation/activation strategy: a regioselective construction of quaternary carbon centers

Org Lett. 2011 Jan 21;13(2):176-9. doi: 10.1021/ol1028332. Epub 2010 Dec 10.

Abstract

A novel TBAF-promoted intermolecular crossed-conjugate addition has been developed. For a range of cyclic β-halo-α,β-unsaturated carbonyl compounds, the vinylogous enolates generated by deprotonation at the γ-position preferentially reacted with Michael acceptors at the α-position to deliver cross-coupling products in good yields.