A novel two-component cyclization toward the synthesis of polysubstituted 4,5-dihydropyrazoles was carried out: i.e., cyclization of β,γ-unsaturated hydrazones with aryl iodides catalyzed by Pd(0). The reaction forms new carbon–carbon bonds and carbon–nitrogen bonds with moderate to good reactivity.

中文翻译：

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β，γ-不饱和Hy与芳基碘化物的钯催化环化反应合成4,5-二氢吡唑

对合成多取代的4,5-二氢吡唑类化合物进行了新颖的两组分环化反应：即，Pd（0）催化的β，γ-不饱和hydr与芳基碘化物的环化反应。该反应形成了具有中等至良好反应性的新碳-碳键和碳-氮键。