How is Methyl N-{[(2-methyl-2-propanyl)oxy]carbonyl}tyrosinate (CAS: 76757-90-9) typically synthesized?

Methyl N-{[(2-methyl-2-propanyl)oxy]carbonyl}tyrosinate is synthesized via a multi-step process involving the carbonylation of 2-methyl-2-propanol with tyrosine. The reaction typically requires the use of a suitable catalyst and is carried out under specific temperature and pressure conditions. The overall yield can be around 70-80%, with the main challenges being the selectivity and the stability of the intermediate compounds during the process.