How is N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-N-methylalanine (CAS: 84000-07-7) typically synthesized?

N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-N-methylalanine can be synthesized using a multi-step process involving the protection of the carboxylic acid group of alanine with fluorenylmethoxycarbonyl (Fmoc) group, followed by the introduction of a methyl group. This compound is often prepared using standard synthetic chemistry techniques, including coupling reactions, protecting group manipulations, and acid/base catalysis. The synthesis typically yields a product with a high degree of purity.