2-Quinolinylboronic acid is widely used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions. This reaction is a key method for forming carbon-carbon bonds, enabling the creation of complex organic molecules. The compound serves as a crucial intermediate in the synthesis of pharmaceuticals, agrochemicals, and advanced materials. Its boronic acid group allows for efficient coupling with aryl halides, making it valuable in the production of biaryl compounds. Additionally, it is employed in the development of fluorescent probes and sensors due to its ability to interact with specific biological targets. Its versatility and reactivity make it a significant tool in medicinal chemistry and material science research.