Provided is a process for preparing racemic nicotine from 1-methyl-3-nicotinoyl-2-pyrrolidone or a salt thereof using one-pot process. The process comprises the following steps: 1) in a reaction vessel, reacting 1-methyl-3-nicotinoyl-2-pyrrolidone or a salt thereof in the presence of a suitable solvent and a strong acid by heat; after the reaction is complete, cooling the same and adjusting the pH to 7-8 with alkali; and 2) directly adding a reductant into the above vessel, and after the reaction, purifying the product so as to obtain high purity racemic nicotine or a salt thereof.
提供了一种使用一锅法从1-甲基-3-烟酰基-2-
吡咯酮或其盐制备外消旋
尼古丁的方法。该方法包括以下步骤:1)在反应釜中,在适当的溶剂和强酸存在下通过加热反应1-甲基-3-烟酰基-2-
吡咯酮或其盐;反应完成后,冷却并用碱调节pH值至7-8;2)直接向上述釜中加入还原剂,在反应后,纯化产物以获得高纯度的外消旋
尼古丁或其盐。