Intermolecular Cross-Double-Michael Addition between Nitro and Carbonyl Activated Olefins as a New Approach in C−C Bond Formation

A novel intermolecular cross-double-Michael addition between nitro and carbonyl activated olefins has been developed through Lewis base catalysis. The reaction took place with a large group of β-alkyl nitroalkenes and α,β-unsaturated ketone/esters, producing an allylic nitro compound in good to excellent yields.