3,4-difluoro-2-[2-fluoro-4-(2-hydroxyethyl)anilino]benzoic acid 、
2-氨氧基乙醇 、
4-(4,6-二甲氧基三嗪-2-基)-4-甲基吗啉盐酸盐 在
silica gel 作用下,
以
甲醇 为溶剂,
以3,4-Difluoro-2-[2-fluoro-4-(2-hydroxyethyl)anilino]-N-(2-hydroxyethoxy)benzamide was isolated as a viscous, transparent oil (57%)的产率得到3,4-difluoro-2-[2-fluoro-4-(2-hydroxyethyl)anilino]-N-(2-hydroxyethoxy)benzamide