SEARCH Articles Figures Tables 1,3-cycloaddition intramolecular Carbonyl compounds intramolecular cycloadditions Carbonyl intramolecular Carbonyl ylides intramolecular -cycloaddition Carbonyl ylides, cycloaddition with intramolecular generation Carbonylative cycloadditions Cycloaddition carbonylative Intramolecular cycloadditions carbonyl ylide generation