Synthesis of 2-Arylpyrazolo[1,5-a]pyridines by Suzuki–Miyaura Cross-Coupling Reaction

Convenient access to a variety of 2-arylated pyrazolo[1,5- a ]pyridine via pyrazolo[1,5- a ]pyridine-2-yl triflate using the Suzuki–Miyaura­ ­­cross-coupling reaction is described. Fifteen 2-arylpyrazolo[1,5- a ]pyridine derivatives were synthesized in 52–95% yields.