birds! A solvent‐controlled regioselective method for α‐monobromination, α,α‐dibromination or imidation of 1,3‐diketones was developed with N‐bromosuccinimide. Dibromination of 1,3‐diketones took place efficiently in acetonitrile with the aid of visible light irradiation. One important solvent triethylorthoformate was found to be highly effective for the monobromination of 1,3‐diketones, as well as