How is 2-Bromo-3,5-dichloropyridine (CAS: 14482-51-0) typically synthesized?

2-Bromo-3,5-dichloropyridine is typically synthesized via a two-step process. First, 3,5-dichloropyridine is brominated using bromine in the presence of a Lewis acid like aluminum trichloride to generate the brominated product. The second step involves the brominated compound undergoing another substitution reaction with a halogen or another electrophile under appropriate conditions to complete the synthesis. The process yields a product with high purity, though care must be taken to avoid unwanted side reactions.