Cyclic β-ketoamides undergo a regioselective 1,2-addition to α,β-unsaturated aldehydes leading to synthetically valuable cycloalkenones by a stereoselective one-pot γ-allylidenation promoted by DBU in MeOH.
环状δ²-酮酰胺与δ±,δ²-不饱和醛发生区域选择性 1,2-加成反应,通过在 MeOH 中由
DBU 促进的立体选择性单锅δ³-烯丙基亚甲基化反应,生成具有合成价值的环烯酮。