The cyclization reactions of alkynes have become one of the most important and useful methodologies for the preparation of heterocycles. To this end, the association between alkynes and nitrogen sources are versatile substrates for the synthesis of triazole derivatives. The improvement in the synthesis of triazoles by the use of copper catalysts in cycloaddition reactions, as well as the significant advances obtained with the use of other transition metals, such as gold, iridium, iron, nickel, ruthenium, samarium, silver, and zinc, to promote the cyclization of alkynes and nitrogen sources are addressed in this review. Furthermore, there has been a significant interest in recent years in developing simple, clean, non-toxic, cost-effective and eco-friendly protocols. In this sense, the reaction of alkynes with nitrogen sources, in the complete absence of transition metals, reaches many of these requirements becoming a good alternative to the synthesis of triazoles. For this reason, the last topic of this review deals with the synthesis of triazoles using alkynes and nitrogen sources under transition metal-free conditions.

炔烃的环化反应已成为制备杂环的最重要和最有用的方法之一。为此，炔烃和氮源之间的缔合是合成三唑衍生物的通用底物。通过在环加成反应中使用铜催化剂来改进三唑的合成，以及使用其他过渡金属（例如金，铱，铁，镍，钌，sa，银和锌）获得的重大进展本综述探讨了促进炔烃和氮源环化的方法。此外，近年来，人们对开发简单，清洁，无毒，具有成本效益和生态友好的协议非常感兴趣。从这个意义上讲，炔烃与氮源的反应 在完全不存在过渡金属的情况下，达到了许多这些要求，成为合成三唑的良好选择。因此，本综述的最后一个主题涉及在无过渡金属条件下使用炔烃和氮源合成三唑的方法。