The present invention provides a process for producing bicartamide of the formula (4);
which comprises
Step A comprising reacting Compound (1) of the formula (1);
with peroxycarboxylic acid to obtain Compound (2) of the formula (2);
Step B comprising reacting said Compound (2) with 4-fluorothiophenol to obtain crude crystals of Compound (3) of the formula (3);
dissolving the crude crystals in a solvent and crystallizing to obtain purified crystals of Compound (3), and Step C comprising reacting Compound (3) and percarboxylic acid to obtain bicalutamide, and also provides a method for purifying crystals of Compound (3) which comprises dissolving crude crystals of Compound (3) in a solvent and crystallizing.
本发明提供了一种生产式(4)双酒石酰胺的工艺;
其中包括
步骤 A 包括将式(1)化合物(1)与过氧
羧酸反应,得到式(2)化合物(2)
与过氧
羧酸反应,得到式(2)的化合物(2);
步骤 B 包括将所述化合物(2)与 4-
氟苯硫酚反应,得到式(3)化合物(3)的粗晶体;
步骤 C 包括将化合物 (3) 与过
羧酸反应以获得
比卡鲁胺,还提供了一种纯化化合物 (3) 晶体的方法,该方法包括将化合物 (3) 的粗晶体溶解在溶剂中并结晶。