How is 2-Methyl-2-propanyl (2R)-2-cyano-1-pyrrolidinecarboxylate (CAS: 228244-20-0) typically synthesized?

2-Methyl-2-propanyl (2R)-2-cyano-1-pyrrolidinecarboxylate is typically synthesized via a multi-step process involving the formation of a cyano derivative of a pyrrolidine followed by the introduction of a 2-methyl-2-propanol group. Commonly used catalysts include transition metals, and the reaction is typically conducted under anhydrous conditions to ensure high yield and selectivity.