The present invention provides a process for the preparation of thalidomide (I) comprising: i) reacting a compound of formula (II), where one of R represents -OH or -NH2 and the other of R represents -NH2 or -OH, respectively, with a phthaloylating agent in the presence of a base and a a non-polar organic solvent to obtain a phthaloyl derivative where R have the same meanings as above; and ii) dehydrating the phthaloyl derivative using a dehydrating agent selected from an acid anhydride, an acid halide, an ion exchange resin or a molecular sleve to obtain thalidomide (I).
本发明提供了一种制备
沙利度胺(I)的方法,包括:i)在碱和非极性有机溶剂存在下,将式(II)的化合物与邻苯二甲酰化试剂反应,其中R中的一个代表-OH或-NH2,另一个分别代表-NH2或-OH,以获得邻苯二甲酰衍
生物,其中R具有与上述相同的含义;以及ii)使用选自酸酐、酸卤、离子交换
树脂或
分子筛的脱
水试剂,脱
水邻苯二甲酰衍
生物,以获得
沙利度胺(I)。