Methyl 2-(6-bromopyridin-3-yl)acetate

This compound is typically obtained as an off-white to pale yellow crystalline powder. Its molecular formula is C8H8BrNO2, corresponding to a molecular weight of 230.06. The melting point generally falls within the range of 68–72°C. The calculated density is approximately 1.58 g/cm³ under ambient conditions. It is soluble in common organic solvents including dichloromethane, ethyl acetate, tetrahydrofuran, and methanol, while exhibiting limited solubility in water and negligible solubility in aliphatic hydrocarbons such as hexane. The molecule consists of a pyridine ring with a bromine atom at the 6position and a methyl acetate group attached at the 3position via a methylene bridge. The ester functionality is susceptible to hydrolysis under acidic or basic conditions, while the bromine atom provides a versatile handle for transitionmetalcatalyzed crosscoupling reactions. Storage in tightly sealed containers protected from light and moisture under cool, dry conditions is recommended. Contact with strong oxidizing agents, strong acids, and strong bases should be avoided.

Methyl 2-(6-bromopyridin-3-yl)acetate is a functionalized pyridine derivative combining a halogenated aromatic heterocycle with an acetic acid methyl ester moiety. The pyridine core, with its electronwithdrawing nitrogen atom, provides a moderately electrondeficient aromatic platform capable of engaging in πstacking and hydrogen bonding interactions. The bromine atom at the 6position serves as a versatile electrophilic handle for palladiumcatalyzed crosscoupling reactions such as Suzuki, Sonogashira, and BuchwaldHartwig couplings, enabling the introduction of diverse aryl, heteroaryl, or amino groups. The methyl acetate group at the 3position provides a protected carboxylic acid equivalent, offering a site for further functionalization through hydrolysis, transesterification, or reduction to the corresponding alcohol. The methylene bridge between the pyridine ring and the ester imparts conformational flexibility while maintaining the functional group's accessibility. This combination of a modifiable halogen and a latent carboxylic acid on a privileged heteroaromatic core makes the compound a valuable building block in medicinal chemistry and organic synthesis for constructing more complex molecules with potential biological activity.

Pharmaceutical Intermediate
In drug discovery, this brominated pyridine ester is employed as a building block for synthesizing compounds with potential activity against cancer, inflammation, and infectious diseases. The bromine atom enables latestage diversification through crosscoupling reactions, allowing systematic exploration of structureactivity relationships. The ester can be hydrolyzed to the carboxylic acid for amide coupling with aminecontaining pharmacophores, enabling rapid generation of libraries for biological screening. Derivatives prepared from this scaffold have been explored as kinase inhibitors, receptor modulators, and antimicrobial agents.

Building Block for Heterocyclic Systems
The compound serves as a precursor for constructing fused heterocyclic systems such as pyrido[3,4d]pyrimidines, pyrazolo[3,4b]pyridines, and imidazo[1,2a]pyridines through cyclocondensation reactions. The bromine can be engaged in crosscoupling to introduce substituents that participate in ringforming reactions, while the ester provides a handle for further functionalization. These ring systems are investigated for their pharmacological properties, with the rigid pyridine core providing conformational constraint beneficial for target recognition and selectivity.

Intermediate for PyridineBased Ligands
The combination of a pyridine nitrogen and a modifiable ester group makes this compound valuable for preparing polydentate ligands for coordination chemistry. After hydrolysis to the carboxylic acid and introduction of additional donor groups via the bromine handle, the resulting ligands can coordinate to transition metals, forming complexes with welldefined geometries. These metal complexes are studied for their catalytic activity in crosscoupling and oxidation reactions.

Organic Synthesis Building Block
As a versatile synthetic intermediate, methyl 2-(6-bromopyridin-3-yl)acetate participates in diverse transformations including palladiumcatalyzed crosscouplings, nucleophilic aromatic substitution (under forcing conditions), and hydrolysis sequences. The bromine can be replaced with various nucleophiles or converted to organometallic species for further functionalization. The ester can be reduced to the corresponding alcohol for ether formation or converted to other functional groups. Its utility extends to the synthesis of natural product analogs and functional materials where the pyridine ring imparts desirable electronic and hydrogenbonding properties.