(R)-(+)-tetrahydro-3-furylamine p-toluenesulfonate salt 、
1-(1-(4-carbamoylphenyl)-5-chloro-6-methyl-1H-benzo[d]imidazol-2-yl)piperidine-4-carboxylic acid 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76%的产率得到(R)-1-(1-(4-carbamoylphenyl)-5-chloro-6-methyl-1H-benzo[d]imidazol-2-yl)-N-(tetrahydrofuran-3-yl)piperidine-4-carboxamide