中文摘要：

从 o-halogenated 芳基醛或酉同类和芳基肼的 1-aryl-1-H-indazoles 的一般合成被描述。这个协议包括了一个分子间的冷凝作用和联合反应的一种 ligand 免费的催化铜的 intramolecular Ullmann 类型。这个方法被用于大量底层在好收益生产 indazole 产品。

英文摘要：

A general synthesis of 1-aryl-l-H-indazoles from o-halogenated aryl aldehydes or ketones and aryl hydrazines was described. This protocol included an intermolecular condensation and a ligand-free copper-catalyzed intramolecular Ullmann-type coupling reaction. This method was applied to a wide range of substrates to produce the indazole products in good yields.