cyclohexylmethyl 4-(3-chloro-4-hydroxyphenyl)-6-ethyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate 、
氯化异氰盐酸盐 在
N,N-二异丙基乙胺 作用下,
以
四氢呋喃 为溶剂,
以85%的产率得到(S)-cyclohexylmethyl 4-(3-chloro-4-(isonicotinoyloxy)phenyl)-6-ethyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate