The synthesis of five membered N-heterocycles by cycloadditions of nitroalkenes with (in)organic azides and other 1,3-dipoles

Cycloaddition reactions have emerged as rapid and powerful method for constructing heterocycles and carbocycles. [3+2] Cycloadditions of nitroalkenes with various 1,3-dipoles have been an interesting research area for many organic chemists. This review outlines the synthesis of N-substituted and NH-1,2,3-triazoles along with other five membered N-heterocycles through cycloaddition reactions of nitroalkene. 1. Introduction 2. Synthesis of 1,2,3-triazoles 2.1.Synthesis of NH-1,2,3-triazoles 2.2.Synthesis of N-substituted 1,2,3-triazoles 3. Synthesis of Pyrrolidines and Pyrroles 4. Synthesis of Pyrazoles 5. Conclusion