trans-4-trifluormethyl-cyclohexyl-amine hydrochloride 、
2-{2,6-dichloro-3-[(2,2-dimethyl-propionylamino)-methyl]-phenylamino}-6-(2,2,2-trifluoroethoxy)-7-fluoro-1H-benzimidazole-5-carboxylic acid 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 1.5h,
以100%的产率得到N-(trans-4-trifluoromethyl-cyclohex-1-yl)-2-{2,6-dichloro-3-[(2,2-dimethyl-propionylamino)-methyl]-phenylamino}-6-(2,2,2-trifluoroethoxy)-7-fluoro-1H-benzimidazole-5-carboxylic acid amide