Used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of herbicides and fungicides. The tert-butyl and chloro groups on the pyrimidine ring enhance stability and improve solubility in organic solvents, allowing for selective functionalization and making it valuable in building complex molecules in medicinal chemistry. Commonly employed in cross-coupling reactions such as Suzuki or Buchwald-Hartwig aminations to form carbon-carbon or carbon-nitrogen bonds. Also utilized in the preparation of kinase inhibitors and other biologically active compounds in research settings.