Synthesis of fused polycyclic nitrogen-containing heterocycles via cascade cyclization
作者:Biswajit Saha、Rishi Kumar、Prakash R. Maulik、Bijoy Kundu
DOI:10.1016/j.tetlet.2006.02.072
日期:2006.4
A novel strategy for the synthesis of fused polycyclic-nitrogen containing heterocycles via cascade cyclization is described. The methodology involves condensation of 1-(2-aminophenyl)-9H-β-carboline-3-carboxylic acid amide with isothiocyanates followed by in situ treatment of the resulting thioureas with HgCl2 for 1 h at rt. The one-pot cascade cyclization leads to interesting changes in molecular
描述了一种通过级联环合合成稠合多环含氮杂环的新策略。该方法包括将1-(2-氨基苯基)-9 H -β-咔啉-3-羧酸酰胺与异硫氰酸酯缩合,然后在室温下用HgCl 2原位处理所得的硫脲1小时。单锅级联环化导致分子结构发生有趣的变化并增加了分子的复杂性。讨论了级联环化的机理原理。