SEARCH Articles Figures Tables 1.3- Dipolar cycloaddition reactions alkyl azides Alkyl 5+2] cycloaddition Alkyl carbodiimides 2+2] cycloaddition reactions Alkyl isocyanates 2+2] cycloaddition reactions Alkyl isothiocyanates 2+2] cycloaddition reactions Alkyl ketones cycloaddition reaction Cycloaddition reactions alkyl nitronates