Abstract In this work, we propose the promising approach that provides conditions for laser-induced ex situ synthesis of Raney-like copper-based nanostructured catalysts. Their catalytic activity and selectivity were investigated in Cu-catalyzed acetylene homo-coupling, Pd/Cu-catalyzed the Sonogashira cross-coupling and Cu-catalyzed azide-alkyne cycloaddition (CAAC). It was found that the growth of particles generated within the focus of the laser beam can last even if laser irradiation is off and can be controlled by adding phenanthroline to the reaction mixture as the stabilizing ligand or by increasing its temperature and concentration. Particle size of the synthesized copper-based catalysts significantly affects the reaction selectivity. Thus, it is possible to manage the course of the catalytic reaction towards formation of either homo-coupling or cross-coupling products by changing the size of the catalytically active copper-containing particles produced during laser-induced synthesis.

中文翻译：

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通过激光诱导异位生成制备铜基纳米催化剂，用于均偶联和交叉偶联反应

摘要 在这项工作中，我们提出了一种有前景的方法，为雷尼类铜基纳米结构催化剂的激光诱导异位合成提供了条件。在Cu催化的乙炔均偶联、Pd/Cu催化的Sonogashira交叉偶联和Cu催化的叠氮化物-炔环加成（CAAC）中研究了它们的催化活性和选择性。发现即使关闭激光照射，在激光束焦点内产生的颗粒的生长也可以持续，并且可以通过将菲咯啉作为稳定配体添加到反应混合物中或通过提高其温度和浓度来控制。合成的铜基催化剂的粒径显着影响反应选择性。因此，