SEARCH Articles Figures Tables 1.3- Dipolar cycloadditions alkene reactions 1.3- Dipolar reactions Alkenes 1,3-dipolar cycloaddition Alkenes 1,3-dipolar cycloadditions Alkenes 2 + 3]-cycloaddition reactions Alkenes 2+2]cycloaddition Alkenes, cycloadditions Cycloaddition reactions 1,3-dipolar Cycloadditions 1,3-dipolar reactions Electron alkene Electron richness Electron-rich