2-Amino-5-bromo-4-methylpyridine丨CAS 98198-48-2

2-Amino-5-bromo-4-methylpyridine is an important heterocyclic building block widely used in pharmaceutical synthesis, agrochemical research, and advanced organic chemistry. Its brominated pyridine core allows it to participate in cross-coupling reactions such as Suzuki, Buchwald–Hartwig, and Sonogashira couplings, making it a versatile intermediate for constructing more complex aromatic and heteroaromatic systems. The amino group provides an additional functional handle for acylation, alkylation, and condensation reactions, enabling the synthesis of diverse substituted pyridines, bioactive scaffolds, and functional materials. It is frequently used in the development of drug candidates targeting enzymes, receptors, or ion channels, where substituted pyridines serve as key pharmacophoric elements. In agrochemical development, it contributes to the creation of novel pesticides and herbicides by enabling precise structural modification. Its role also extends to material science and fine-chemical synthesis where heterocyclic motifs are incorporated for electronic, optical, or catalytic properties.

The main advantage of 2-Amino-5-bromo-4-methylpyridine is its dual functionalization, which offers chemists high flexibility when designing multi-step synthetic routes. The presence of both an amino group and a reactive bromine atom enables selective transformation at either position, allowing stepwise construction of complex molecules with minimal need for protecting groups. Its stability under common reaction conditions simplifies handling and storage, while its compatibility with a broad range of catalysts and reagents makes it useful in modern cross-coupling methodologies. The methyl substituent enhances the steric and electronic diversity of resulting derivatives, which can improve binding characteristics, metabolic stability, or physicochemical properties in pharmaceutical research. Its reliability and predictable reactivity profile reduce synthetic complexity and provide high yields, ultimately accelerating development workflows in medicinal, agrochemical, and fine-chemical synthesis.