How is 3-Ethyl 1-(2-methyl-2-propanyl) 5,5-difluoro-1,3-piperidinedicarboxylate (CAS: 1356339-26-8) typically synthesized?

The compound is typically synthesized via a multistep process involving alkylation and condensation reactions. The synthesis generally requires the use of a suitable catalyst and anhydrous conditions. The final product can be isolated by recrystallization from a suitable solvent, with a yield of around 85-90%. The process may involve the use of anhydrous solvents, such as dichloromethane, and requires careful handling of reagents.