SEARCH Articles Figures Tables 1,3-dipolar cycloaddition reactions 1,3-dipole 1.3- Dipolar cycloadditions 1.3- dipoles 1.3- Dipoles cycloaddition reactions Azide dipoles, cycloaddition Dipole structures intramolecular cycloadditions Intramolecular cycloadditions azide dipoles Porphyrins as 1,3-dipoles in 1,3-dipolar cycloadditions