How is 2-Methyl-2-propanyl 2-[(cyclopropylamino)methyl]-1-pyrrolidinecarboxylate (CAS: 1289387-44-5) typically synthesized?

2-Methyl-2-propanyl 2-[(cyclopropylamino)methyl]-1-pyrrolidinecarboxylate is typically synthesized via a multi-step reaction involving the coupling of 2-cyclopropylaminomethyl-1-pyrrolidinecarboxylic acid with 2-methyl-2-propanol. The reaction is catalyzed by a transition metal complex, such as palladium(II) acetate, in the presence of a base like triethylamine. High yields are achieved with excellent regioselectivity and enantioselectivity under optimized reaction conditions.