[reaction: see text] Regioselective deprotonations of (S)-nicotine and derivatives at the C-2 and C-6 positions of the pyridine ring were performed in good to excellent yields. These methodologies allow the direct introduction of a plethora of functional groups onto the pyridine ring of nicotine.
[反应:见正文]在
吡啶环的C-2和C-6位置进行(S)-
烟碱及其衍
生物的区域选择性去质子反应,收率很好。这些方法允许将过多的官能团直接引入
尼古丁的
吡啶环上。