This review mainly focuses on purely Ag-catalyzed 1,3-dipolar azide-alkyne cycloaddition (AgAAC) so called click reaction to synthesize 1,4-regioisomers of 1,2,3-triazoles. The most established catalyst Cu (I) developed by Fokin–Sharpless and Meldal group in 2002 for AAC reaction have been further extended to different other transition metal catalysts because of certain limitations of CuAAC methods. Among different transition metal catalyzed methods, AgAAC is the most studied one having same electronic configuration, d¹⁰ (AgI) with that of CuI and shows high catalytic performance.

中文翻译：

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Ag催化的叠氮化物-炔烃环加成：无铜合成1,4-二取代1,2,3-三唑的方法

这项审查主要侧重于纯Ag催化的1,3-偶极叠氮化物-炔烃环加成反应（AgAAC），即所谓的点击反应，以合成1,2,3-三唑的1,4-区域异构体。由于CuAAC方法的某些局限性，Fokin–Sharpless和Meldal集团在2002年为AAC反应开发的最成熟的催化剂Cu（I）已进一步扩展到其他过渡金属催化剂。在各种过渡金属催化方法中，AgAAC是研究最多的一种，具有相同的电子构型，d ¹⁰（AgI）与CuI相同，并显示出很高的催化性能。