4-chloro-3-[7-fluoro-5-(2-chloropropionylamino)-2H-1,4-benzoxazine-3(4H)-on-6-yl]-1-methyl-5-difluoromethoxy-1H-pyrazole 在
sodium hydride 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 2.0h,
生成 8-[4-chloro-5-(difluoromethoxy)-1-methyl-1H-pyrazole-3-yl]-9-fluoro-5-methyl-5H-pyrazino[1,2,3-de]-1,4-benzoxazine-3,6(2H,7H)-dione