How is Ethyl 3-[(1R)-1-phenylethyl]-2-thioxo-2,3-dihydro-1H-imidazole-4-carboxylate (CAS: 84711-26-2) typically synthesized?

Ethyl 3-[(1R)-1-phenylethyl]-2-thioxo-2,3-dihydro-1H-imidazole-4-carboxylate can be synthesized via a multistep process involving the formation of a thioimidazole intermediate, followed by alkylation with ethyl bromide. The reaction typically involves the use of a Lewis acid catalyst and is carried out under mild conditions. The yield of the final product is around 75-80%, depending on the purity of starting materials and reaction conditions.