申请人:Xu Xuenong
公开号:US20160083373A1
公开(公告)日:2016-03-24
Revealed in the present invention is a method for preparing Afatinib (I): using 2-nitrile-4-[4-(N,N-dimethylamino)-I-oxo-2-buten-I-yl]amino-5-[(S)-(tetrahydrofuran-3-yl)oxy]aniline (II) and 4-fluoro-3-chloroaniline (III) as starting materials, and respectively performing a condensation and cyclization reaction with N,N-dimethylformamide dimethyl acetal (IV) to prepare Afatinib (I), wherein the method significantly reduces the manufacturing steps of Afatinib and greatly lower the costs. In addition, also provided in the present invention is a method for preparing an intermediate of Afatinib, wherein the method has a stable process, uses readily available starting materials, has a low cost, and all the reactions are classic reactions, suitable for meeting amplification requirements in the industry.
本发明揭示了一种制备阿法替尼(I)的方法:使用2-腈基-4-[4-(N,N-二甲基氨基)-1-氧代-2-丁烯-1-基]氨基-5-[(S)-(四氢呋喃-3-基)氧基]苯胺(II)和4-氟-3-氯苯胺(III)作为起始原料,分别与N,N-二甲基甲酰胺二甲基缩醛(IV)进行缩合和环化反应制备阿法替尼(I),该方法显著减少了阿法替尼的制造步骤,大大降低了成本。此外,本发明还提供了一种制备阿法替尼中间体的方法,该方法具有稳定的工艺过程,使用易得的起始原料,成本低廉,并且所有反应均为经典反应,适合满足行业中的扩产需求。