A new, palladium-free Sonogashira coupling reaction protocol using a catalytic system that comprises a simple, cheap, widely available copper salt and a chelating 1,2,3-triazolylidene ligand precursor is reported. This protocol provides the desired coupling products in moderate to very good yields.

中文翻译：

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采用原位制备的铜/螯合 1,2,3-三唑基系统的无 Pd Sonogashira 偶联方案

报道了一种新的无钯 Sonogashira 偶联反应方案，该方案使用催化系统，该系统包括简单、廉价、广泛可用的铜盐和螯合 1,2,3-三唑基配体前体。该协议以中等至非常好的产量提供所需的耦合产品。