A Highly Diastereoselective Tertiary Amine‐Catalyzed Cascade Michael–Michael–Henry Reaction between Nitromethane, Activated Alkenes and α,β‐Unsaturated Carbonyl Compounds

A new tertiary amine‐catalyzed cascade Michael–Michael–Henry reaction between nitromethane, a doubly activated alkene and an α,β‐unsaturated carbonyl compound is described, which provides a convenient and efficient synthesis for densely functionalized cyclohexanes and some bicyclic compounds in moderate to excellent yields with high diastereoselectivity.