4-(4'-methoxy-biphenyl-4-yloxy)-phenylamine 在
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以94%的产率得到(S)-{2-hydroxy-1-[4-(4'-methoxy-biphenyl-4-yloxy)-phenylcarbamoyl]-1-methyl-ethyl}carbamic acid tert-butyl ester