The palladiumcatalysedcoupling reaction of the tinmaskeddienolate (2) with organic halides takes place at the position substituted by thin, thereby providing a new method for C–C bondformation at the γ-position of dienolates.
Stabilization and activation of dienolates with germanium and tin. Stereo- and regioselective aldol reactions, regioselective coupling reactions, and regioselective synthesis of amino acid derivatives