Concise and facile synthesis of (<i>R,R</i>)-dexmethylphenidate hydrochloride and its three stereoisomers
作者:Chunzheng Li、Yuanbo Ji、Qing Cao、Jianqi Li、Bonan Li
DOI:10.1080/00397911.2017.1293109
日期:2017.7.18
preparation of four stereoisomers of dexmethylphenidate hydrochloride starting from a single reactant, 2-benzyolpyridine, through an eight-step reaction process, which includes hydrogenation, protection, oxidation, chiral separation, Wittig reaction, hydroboration, pyridinium dichromate oxidation, and methyl esterification. The absolute configuration of the two chiral centers of each stereoisomer was confirmed
摘要 首次报道了以单一反应物 2-苄基吡啶为原料,通过加氢、保护、氧化、手性分离、 Wittig 反应、硼氢化、重铬酸吡啶氧化和甲酯化。每个立体异构体的两个手性中心的绝对构型通过 X 射线和手性 HPLC 分析得到证实。图形概要