The present invention provides a method for producing a xanthine oxidase inhibitor, which is a therapeutic agent for hyperuricemia, or intermediates of the same, said method being efficient and using a short process. The present invention is a novel coupling method for obtaining a compound represented by formula (3) by bringing about a coupling reaction between a compound represented by formula (1) and a compound represented by formula (2), in the presence of a palladium compound, a ligand capable of coordinating to the palladium compound, a base, a C1-C40 carboxylic acid, and at least one kind of additive.
本发明提供了一种生产作为高
尿酸血症治疗药物的
黄嘌呤氧化酶
抑制剂或其中间体的方法,所述方法高效且工艺流程短。本发明是一种新颖的偶联方法,通过在
钯化合物、能与
钯化合物配位的
配体、碱、C1-C40
羧酸和至少一种添加剂存在下,使式(1)代表的化合物与式(2)代表的化合物发生偶联反应,得到式(3)代表的化合物。