How is 2-Methyl-[1,1'-biphenyl]-4-carboxylic acid (CAS: 178313-67-2) typically synthesized?

2-Methyl-[1,1'-biphenyl]-4-carboxylic acid is usually synthesized via a multistep process. It involves the coupling of 2-methylbiphenyl with benzoic anhydride followed by hydrolysis. The reaction typically occurs under mild conditions and uses appropriate catalysts to ensure high selectivity and yield. The final product is then purified to remove any byproducts and impurities.