Asymmetric cycloaddition reactions between 2-benzopyrylium-4-olates and 3-(2-alkenoyl)-2-oxazolidinones in the presence of 2,6-bis(oxazolinyl)pyridine-lanthanoid complexes
Keywords: اسید کیرال لوئیس; Carbonyl ylide; 1,3-Dipolar cycloaddition; Chiral Lewis acid; Rare earth metal; Diazocarbonyl compound; Intramolecular carbenoid-carbonyl cyclization;