作者:Zilong Tang、Joelle Mayrargue、Mouad Alami
DOI:10.1080/00397910701483944
日期:2007.9.1
Abstract Piperidine derivatives 1a–e and 2a–f have been prepared by the reduction of 3‐and 4‐substituted pyridinium salts with NaBH4 in moderate to excellent yields. The reactions regioselectively give 1,2,5,6‐tetrahydropyridines, and the yields depend greatly upon the nature of substituents on the phenyl ring and on the nitrogen atom, the nature and the position of the substituents on the pyridyl
摘要 哌啶衍生物 1a-e 和 2a-f 是通过用 NaBH4 还原 3-和 4-取代的吡啶盐制备的,产率中等至极好。反应区域选择性地得到 1,2,5,6-四氢吡啶,产率很大程度上取决于苯环和氮原子上取代基的性质、吡啶环上取代基的性质和位置以及链芳氧基和吡啶基之间的长度。