How is 2-(3,4-Difluorophenyl)cyclopropanamine (CAS: 633312-86-4) typically synthesized?

2-(3,4-Difluorophenyl)cyclopropanamine can be synthesized via a multistep process involving the preparation of the 3,4-difluorophenyl ring and subsequent amination with a primary amine. Common synthetic routes include the use of protected 3,4-difluorophenyl derivatives followed by deprotection and amidation. The reaction typically proceeds with high selectivity and good yield under mild conditions.