作者:Giang Vo-Thanh、Fran�ois-Xavier Felpin、Gilbert Nourrisson、Michel Trierweiler、Richard J. Robins、Jacques Lebreton
DOI:10.1002/jlcr.512
日期:2001.11
The synthesis of 15 N-labelled nornicotine 2 and 15 N-labelled nicotine 1 is described via the reductive aminocyclization of a 1,4-ketoaldehyde with a corresponding amine in the presence of sodium cyanoborohydride. Yields of 30% and 26%, respectively, were obtained from 3-bromopyridine. The 15 N-label has been easily introduced from ammonium- 15 N-labelled chloride as an inexpensive label source. As
15 N-标记的去甲烟碱 2 和 15 N-标记的烟碱 1 的合成是通过 1,4-酮醛与相应胺在氰基硼氢化钠存在下的还原性氨基环化来描述的。3-溴吡啶的产率分别为30%和26%。15 N 标记很容易从 15 N 标记的氯化铵中引入,作为一种廉价的标记源。据我们所知,这是 15 N 标记尼古丁的首次合成。