3-(4-氟苯基氨基)-3-氧代丙酸 、
methyl 4-(4-amino-3-fluorophenoxy)picolinate 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 21.0h,
以31.9%的产率得到Methyl 4-{3-fluoro-4-[2-(4-fluorophenylcarbamoyl)acetamino]phenoxy}pyridine-2-carboxylate