Diazonium Salts in Visible Light Photocatalysis - a Focused Overview of their Application in Continuous Flow Synthesis

This mini review presents selected examples of the combination of continuous synthesis in microreactors and photocatalysis with diazonium salts using visible light. The chemical processes in which these reactive intermediates are used are discussed in terms of safety and productivity by switching to continuous flow technology. This approach has proven to be a reliable method for various organic synthesis routes with diazonium salts under mild and well-defined conditions, resulting in improved conversion, selectivity, and overall safety.