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<p></p><p>In this mini-review, the application of noncatalyzed (3+2) cycloaddition reactions for the selective preparation of nitropyrazoles and their hydrogenated analogs is analyzed based on recent literature. Generally, the preparation of the title compounds <i>via</i> (3+2) cycloaddition protocol is feasible using three types of three-atom components: diazo compounds, nitrylimines, and azomethine imines. It was found that nearly all processes discussed were carried out with high or full selectivity also at room temperature.</p>

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Recent progress in the synthesis of nitropyrazoles and their hydrogenated analogs via noncatalyzed (3+2) cycloaddition reactions of conjugated nitroalkenes

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • Radomir Jasiński

摘要

In this mini-review, the application of noncatalyzed (3+2) cycloaddition reactions for the selective preparation of nitropyrazoles and their hydrogenated analogs is analyzed based on recent literature. Generally, the preparation of the title compounds via (3+2) cycloaddition protocol is feasible using three types of three-atom components: diazo compounds, nitrylimines, and azomethine imines. It was found that nearly all processes discussed were carried out with high or full selectivity also at room temperature.