Abstract
Cycloaddition reactions have emerged as rapid and powerful methods 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 nitroalkenes.
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
Key words
nitroalkenes - 1,3-dipolar cycloaddition - azides - triazoles - pyrrolidines - pyrroles - pyrazoles