A process for the preparation of (S)- or L-3-(3,4-dihydroxyphenyl)alanine (L-dopa) is described. The process utilizes water as reaction process solvent and proceeds via formation of an intermediate which can be kinetically resolved in a polar solvent to a precursor of the desired isomer and in which the undesired isomer can be efficiently racemized for reuse.
本发明提供了一种制备(S)-或(L)-3-(3,4-二羟基苯基)丙
氨酸(L-
多巴胺)的方法。该方法利用
水作为反应过程溶剂,并通过形成中间体来进行,该中间体可以在极性溶剂中动力学地分离为所需异构体的前体,并且其中的不需要的异构体可以有效地进行外消旋以进行再利用。