Cross-coupling is a chemical reaction that allows the formation of carbon-carbon bonds between two different organic molecules. This process typically involves the use of a catalyst, often a metal like palladium or nickel, to facilitate the reaction. Cross-coupling is widely used in organic synthesis, particularly in the production of pharmaceuticals and complex organic compounds. One of the most common types of cross-coupling reactions is the Suzuki reaction, which combines aryl halides with boronic acids to create biaryl compounds. This method is valued for its efficiency and ability to produce high yields of desired products, making it a crucial tool in modern chemistry and materials science.