Electrochemical <i>α</i> ‐Selective Chlorination of Indanones with AlCl ₃ /MgCl ₂

We propose an electrochemical regioselective chlorination strategy for the α ‐position of indanone. In this strategy, AlCl 3 or MgCl 2 plays a dual role as both a chlorine source and an electrolyte, allowing for the selective generation of mono‐ or dichlorinated products under mild conditions by utilizing AlCl 3 or MgCl 2 as the chlorine source. This method not only aligns with green chemistry principles but also demonstrates good substrate universality and scalability, providing an efficient and environmentally friendly approach for the synthesis of α ‐chloroindanone.