Used in organic synthesis as a building block for creating complex molecules, particularly in cross-coupling reactions like Suzuki-Miyaura coupling. This reaction is essential for forming carbon-carbon bonds, making it valuable in pharmaceutical research and drug development. Its deuterated form (d4) is often employed in studies involving isotopic labeling, aiding in the tracking and analysis of chemical reactions or metabolic pathways. Additionally, it serves as a precursor in the synthesis of pyridine-based compounds, which are widely used in agrochemicals, materials science, and medicinal chemistry.