A Stereospecific Synthesis of ( E, Z )‐α, β‐γ, δ‐Diunsaturated Aldehydes, Ketones, and Esters Using the Benary Reaction

The reaction between ( Z )‐1‐alkenyllithium and ( E )‐β‐(N, N‐dialkylamino)‐α, β‐alkenals, ( E )‐β‐(N, N‐dialkylamino)‐α, β‐alkenones or ( E )‐β‐(N, N‐dialkylamino)‐α, β‐alkenoic esters yields mainly ( E, Z )‐α, β‐γ, δ‐diunsaturated aldehydes, ketones, or esters and is therefore highly stereospecific.