5-[5-[(1S)-1-aminoethyl]-3-cyclopropyl-1,2,4-triazol-1-yl]pyrazine-2-carboxamide hydrochloride 、
2,6-bis(difluoromethyl)pyridine-4-carboxylic acid 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
二氯甲烷 为溶剂,
以68.5 %的产率得到5-[5-[(1S)-1-[[2,6-bis(difluoromethyl)pyridine-4-carbonyl]amino]ethyl]-3-cyclopropyl-1,2,4-triazol-1-yl]pyrazine-2-carboxamide