Bowman, Edward R.; McKennis, Herbert; Martin, Billy R., Synthetic Communications, 1982, vol. 12, # 11, p. 871 - 880
作者:Bowman, Edward R.、McKennis, Herbert、Martin, Billy R.
DOI:——
日期:——
SYNTHESIS AND RESOLUTION OF NICOTINE
申请人:NJOY, Inc.
公开号:US20160326134A1
公开(公告)日:2016-11-10
The present disclosure generally relates to methods of preparing nicotine and resolving R,S nicotine to enrich the (S)(−) enantiomer. The method may comprise combining N-methyl-2-pyrrolidone or a salt thereof with a nicotinate compound in the presence of a solvent and a strong base to form 1-methyl-3-nicotinoyl-2-pyrrolidone or a salt thereof; and reducing the 1-methyl-3-nicotinoyl-2-pyrrolidone or salt thereof in solution with Na
2
S
2
O
4
to produce racemic nicotine or salt thereof. Resolving the racemic nicotine (or other enantiomeric mixture) may comprise combining the nicotine with (−)-O,O′-di-p-toluoyl-L-tartaric acid (L-PTTA).