5-Bromo-3-chloro-2-methoxypyridine(CAS: 848366-28-9)

5-Bromo-3-chloro-2-methoxypyridine is a crystalline solid with a molecular weight of approximately 256.01 g/mol. It has a low solubility in water but is more soluble in organic solvents like methanol and ethanol. This compound exhibits moderate reactivity, particularly towards nucleophilic substitution reactions. It can also undergo oxidative deamination under appropriate conditions.

5-Bromo-3-chloro-2-methoxypyridine is typically synthesized through a multistep process involving the bromination of 3-chloro-2-methoxypyridine followed by a methylation step. This process often uses phosphorus tribromide as a brominating agent and a suitable catalyst such as aluminum chloride. High selectivity and good yield are achievable under optimized reaction conditions.

5-Bromo-3-chloro-2-methoxypyridine is primarily used in the pharmaceutical industry for the synthesis of various compounds, particularly as a precursor in the development of new drugs. It also finds applications in sensor systems and as an intermediate in the production of certain dyes and pigments.

When handling 5-Bromo-3-chloro-2-methoxypyridine, appropriate personal protective equipment (PPE) such as gloves, safety goggles, and a lab coat should be worn. Work should be conducted in a well-ventilated area or a fume hood to minimize exposure to vapors. Spills should be cleaned up with appropriate absorbents and disposed of according to local regulations. Always refer to the Safety Data Sheet (SDS) for detailed handling instructions and emergency procedures.