3-chloro-2-(2-fluoro-4-butyloxycarbonylmethoxy-5-nitrophenyl)-4,5,6,7-tetrahydro-2H-indazole 在
铁粉 乙酸乙酯 、
正己烷 作用下,
以
溶剂黄146 为溶剂,
反应 5.0h,
以to give 3-chloro-2-[7-fluoro-2H-1,4-benzoxazine-3(4H)-on-6-yl]-4,5,6,7-tetrahydro-2H-indazole (6.2 g)的产率得到3-chloro-2-[7-fluoro-2H-1,4-benzoxazin-3(4H)-on-6-yl]-4,5,6,7-tetrahydro-2H-indazole