Used in cross-coupling reactions, particularly in Suzuki-Miyaura coupling, to synthesize complex pyrimidine derivatives. These derivatives are valuable in pharmaceutical research for developing active pharmaceutical ingredients (APIs), especially in oncology and antiviral drug discovery. The boronate ester group enables efficient and selective bond formation with aryl or heteroaryl halides under mild conditions, making it a key building block in medicinal chemistry and late-stage functionalization of drug candidates.