Stereoselective One-Pot Deconjugation, Aldol, and Stabilized Peterson Olefination of α-Trialkylsilyl-β-alkyl-α,β-Unsaturated Esters.

A stereoselective reaction process including a one-pot deconjugation, aldol, and stabilized Peterson olefination of α-trialkylsilyl-β-alkyl-α,β-unsaturated esters coupled with aliphatic aldehydes is described. This sequential procedure afforded tri-and disubstituted conjugated diene ester products with dr values of 12-20:1 for the newly established alkene moieties in modest to good isolated yields.