Product Application： 6-Chloro-3-pyridinylboronic acid can be used: To prepare biologically significant 3-arylcoumarins by reacting with 3-chlorocoumarin through Suzuki reaction. As a substrate in the synthesis of 11-(pyridinylphenyl)steroid with progesterone agonist/antagonist profile. As a substrate in the preparation of α- secondary and tertiary pyridines by the reaction of pyridotriazoles with boronic acids. As a substrate in the palladium-catalyzed α-arylation of saturated cyclic amines and N-methyl amines.