How is 2-Methyl-2-propanyl [(2S)-2-oxiranylmethyl]carbamate (CAS: 161513-47-9) typically synthesized?

2-Methyl-2-propanyl [(2S)-2-oxiranylmethyl]carbamate can be synthesized via a multistep reaction involving the formation of an oxirane ring followed by a nucleophilic substitution. Commonly, it is prepared by reacting 2-methyl-2-propanol with phosgene in the presence of a base such as pyridine. The reaction yields the desired compound with good selectivity and moderate to high yields.