1-(propane-2-sulfonyl)-aziridine-2-carboxylic acid methyl ester 、
碘化钠 、
1,2,4-三氯萘 以to give (RS)-3-(2-chloro-phenyl)-2-oxo-1-(propane-2-sulfonyl)-imidazolidine-4-carboxylic acid methyl ester as a light yellow oil的产率得到(RS)-3-(2-chloro-phenyl)-2-oxo-1-(propane-2-sulfonyl)-imidazolidine-4-carboxylic acid methyl ester