Abstract
1,3-dipolar cycloadditions have been studied extensively for decades. The advantages of this synthetic approach may be increased further by applying microwave irradiation. The substrates for 1,3CA reactions are particularly sensitive to microwave heating due to their dipolar nature. Furthermore, the lack of solvent effects and a catalyst that may be applied in the solid phase make these reactions even more suitable for microwave enhancement. In this review we present the advantages of microwave heating in the synthesis of nitrogen heterocycles through 1,3-dipolar cycloaddition. Although it has been studied for years, this area of synthetic chemistry still requires further elucidation.
Keywords: Azoles, azomethines, click chemistry, cycloaddition, microwave synthesis, nitrile imines.
Graphical Abstract
Call for Papers in Thematic Issues
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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