5-[(tert-butoxycarbonylamino)methyl]-2-(difluoromethyl)pyridine-3-carboxylic acid 、
[4-methyl-5-[4-(trifluoromethyl)phenyl]-1H-imidazol-2-yl]ammonium formate 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 18.0h,
以56%的产率得到tert-butyl ((6-(difluoromethyl)-5-((4-methyl-5-(4-(trifluoromethyl)phenyl)-1H-imidazol-2-yl)carbamoyl)pyridin-3-yl)methyl)carbamate