3-bromo-2-chloro-5-fluorobenzoic acid 、 (3R,9aS)-3-(3-chloro-4-fluorophenyl)-1,3,4,6,7,8,9,9a-octahydropyrazino[2,1-c][1,4]oxazine 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,
反应 3.17h,
生成 (3-bromo-2-chloro-5-fluorophenyl)((3R,9aS)-3-(3-chloro-4-fluorophenyl)hexahydropyrazino[2,1-c][1,4]oxazin-8(1H)-yl)methanone