Synthesis of C-4 Substituted Nicotine Derivatives via an <i>N</i>-Acylpyridinium Salt of (<i>S</i>)-Nicotine
作者:Daniel L. Comins、Laura S. King、Emilie D. Smith、Florence C. Février
DOI:10.1021/ol0520469
日期:2005.10.1
of novel nicotine derivatives were prepared from (S)-nicotine via a two-step sequence. Addition of a cuprate reagent to an N-acylpyridinium salt of nicotine, followed by aromatization with elemental sulfur, afforded C-4 substituted nicotines in moderate to high yield. Using this method, 4-(dimethylphenylsilyl)nicotine was prepared and oxidized to afford (S)-4-hydroxynicotine.
[反应:见正文]由(S)-尼古丁通过两步序列制备了多种新颖的尼古丁衍生物。向尼古丁的N-酰基吡啶鎓盐中加入一种铜酸盐试剂,然后用元素硫进行芳构化,以中等至高收率得到了C-4取代的尼古丁。使用这种方法,制备了4-(二甲基苯基甲硅烷基)烟碱并被氧化以提供(S)-4-羟基烟碱。