How is 4'-Pentyl-4-biphenylcarboxylic acid (CAS: 59662-47-4) typically synthesized?

4'-Pentyl-4-biphenylcarboxylic acid (CAS: 59662-47-4) is typically synthesized via a multistep process involving the coupling of biphenyl and pentylation of the phenol group. Commonly, this involves using a Grignard reagent or another alkylation method. The reaction conditions, such as temperature and solvent, need to be carefully controlled to achieve high yield and selectivity. The final product is purified by recrystallization or other standard techniques.