A method for the preparation of tapentadol in the form of a base or its hydrogen chloride, which involves the preparation of a salt (III) from a mixture of diastereomers (II) by means of crystallization-induced asymmetric transformation (CIAT) through oxo-enol tautomeric equilibrium of covalently linked diastereomers, shifted towards the desired diastereomer without the use of chiral resolution with chiral carboxyl acids.
一种制备
盐酸氢替泼尼酮或其碱形式的方法,该方法涉及通过晶化诱导不对称转化(CIAT)从二对映异构体(II)的混合物中制备盐(III),通过共价连接的二对映异构体的氧烯醇互变构平衡,将其偏向所需的二对映异构体,而不使用手性
羧酸进行手性分离。