SEARCH Articles Figures Tables 1.3- dipolar cycloadditions Lewis acid catalysis Cycloaddition Aluminum Lewis acid-catalyzed Cycloaddition Boron Lewis acid catalyzed Cycloaddition Cu -Lewis acid catalyzed Cycloaddition Lewis acid promoted Cycloaddition Lewis acids Cycloaddition Lewis acids Cycloaddition lanthanide Lewis acid catalyze Cycloaddition reactions Lewis acid catalyzed Diels—Alder Lewis acid catalysis 1,3-dipolar cycloaddition Lewis acid catalysis 3 4- 2-cycloaddition Lewis acid catalyzed cycloaddition Lewis acid catalyzed cycloadditions Lewis acid catalyzed reaction 4 + 21 cycloaddition Lewis acids 1,3-dipolar cycloaddition synthesis Lewis acids azomethine ylide 1,3-dipolar cycloadditions Lewis acids carbonyl ylide 1,3-dipolar cycloadditions Lewis acids catalytic asymmetric 1,3-dipolar cycloadditions Lewis acids nitrile oxide cycloadditions Lewis acids nitrone cycloadditions