Palladium‐Catalyzed Monoselective Halogenation of CH Bonds: Efficient Access to Halogenated Arylpyrimidines using Calcium Halides

Abstract

Abstract A wide variety of ortho ‐halogenated arylpyrimidines were prepared with high monoselectivity and functional‐group tolerance by using calcium halides as crucial halogenating agents and cupric trifluoroacetate as oxidant in the presence of air.