SEARCH Articles Figures Tables 1.3- Dipolar reactions Cycloaddition heterocyclization Cycloaddition reactions 1,3-dipolar Cycloaddition reactions heterocycles Cycloadditions 1,3-dipolar reactions Five-Membered Heterocycled Five-membered heterocycles Five-membered heterocyclics Heterocycles 3+2] cycloadditions Heterocycles cycloaddition Heterocycles reaction Heterocyclization reactions