Organoaluminium reagents R 2 AlX (X= SPh, SeMe) easily add to α, β-unsaturated carbonyl compounds in 1, 4-fashion. The resulting aluminium enolates react with aldehydes to give aldol adducts in fair to good yields. Formal elimination of HX from the adducts provides α- substituted α, β-unsaturated carbonyl compounds. The overall transformation is an addition of aldehydes to 1-acylethenyl anion equivalent. Diethylaluminium iodide also is found to ...