How is 2-bromopyridine-3-carbonitrile (CAS: 20577-26-8) typically synthesized?

2-Bromopyridine-3-carbonitrile (CAS: 20577-26-8) is typically synthesized through the reaction of 2-bromopyridine with hydrogen cyanide. Commonly, this is done using a catalytic hydrogenation process in the presence of a palladium catalyst. The reaction is carried out under pressure and at elevated temperatures to ensure high yield and selectivity. The product can also be obtained by electrophilic aromatic substitution reactions.