Copper(II) tosylate is widely used as a catalyst in organic synthesis, particularly in oxidation and coupling reactions. It facilitates C–O and C–N bond formation under mild conditions, making it valuable in the preparation of ethers and amines. It is also employed in the synthesis of natural products and pharmaceuticals due to its stability and selectivity. In addition, copper(II) tosylate serves as a reagent in electrochemical processes and materials science, where controlled copper ion release is required. Its solubility in polar organic solvents enhances its utility in homogeneous catalytic systems.