How is 4-Amino-3-(4-fluorophenyl)butanoic acid (CAS: 52237-19-1) typically synthesized?

4-Amino-3-(4-fluorophenyl)butanoic acid is typically synthesized via a multistep process involving the coupling of 4-fluoroaniline with 3-bromobutanoic acid, followed by the conversion of the resulting intermediate to the final product through amination. This process often utilizes a palladium catalyst and can achieve a yield of around 70-80%. Additional purification steps such as recrystallization are commonly employed to obtain the pure compound.