Used in Suzuki-Miyaura cross-coupling reactions as a boronate ester reagent to introduce pyridine-containing fragments into organic molecules. Its main application is in the synthesis of pharmaceuticals and agrochemicals where the picolinate ester group acts as a directing or functional handle. The tert-butyl protecting group enhances stability and solubility during reaction processes, making it suitable for multi-step synthesis. Commonly employed in medicinal chemistry for constructing biaryl systems with nitrogen heterocycles.