tert-butyl [2-amino-2-(3,4-difluorophenyl)ethyl]carbamate 、 2-(4-chloro-3-fluorophenyl)-4-oxo-5-(propan-2-yl)-3,4-dihydropyrrolo[2,1-f][1,2,4]triazine-6-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
N,N-二甲基甲酰胺 为溶剂,
以90%的产率得到tert-butyl N-[2-[[2-(4-chloro-3-fluorophenyl)-5-isopropyl-4-oxo-3H-pyrrolo[2,1-f][1,2,4]triazine-6-carbonyl]amino]-2-(3,4-difluorophenyl)ethyl]carbamate