Copper-Catalyzed Intramolecular <i>N</i>-Vinylation of Sulfonamides: General and Efficient Synthesis of Heterocyclic Enamines and Macrolactams
作者:Hongjian Lu、Xinting Yuan、Shana Zhu、Changhui Sun、Chaozhong Li
DOI:10.1021/jo8016617
日期:2008.11.7
the catalysis of CuI/N,N'-dimethylethylenediamine, intramolecular C-N coupling between sulfonamides and vinyl halides was successfully implemented, leading to the efficient synthesis of 5-, 6-, 7-, and even 8-membered heterocyclic enamines in both exo and endo modes. The bicyclic enamines thus formed provided a convenient entry to the corresponding 9- to 12-membered lactams by oxidative C=C bond cleavage
通过CuI / N,N'-二甲基乙二胺的催化作用,磺酰胺和乙烯基卤化物之间的分子内CN偶联成功实现,从而导致在两个exo中有效合成5、6、7,甚至8元杂环烯胺和内模。由此形成的双环烯胺通过氧化的C = C键裂解提供了方便的进入相应的9至12元内酰胺的途径。