How is 1-(5-Bromo-2-fluoro-3-pyridinyl)ethanone (CAS: 1111637-74-1) typically synthesized?

1-(5-Bromo-2-fluoro-3-pyridinyl)ethanone is typically synthesized via aromatic substitution reactions, where bromo or fluoro groups are introduced into the pyridine ring. Common methods include electrophilic aromatic substitution using bromine or fluorine in the presence of Lewis acids like aluminum chloride. The yield is generally good, and the method is selective.