How is 5-Bromo-4-pyrimidinamine (CAS: 1439-10-7) typically synthesized?

5-Bromo-4-pyrimidinamine is typically synthesized by bromination of 4-pyrimidinamine. This process involves treating 4-pyrimidinamine with bromine in the presence of a base like sodium hydroxide. Other methods include using bromine derivatives in organic solvents, with the reaction often being carried out under mild conditions to achieve good selectivity and high yield.