Facile synthesis of isoquinolines by imination and subsequent palladacycle-catalyzed iminoannulation of internal alkynes
作者:Fan Yang、Junli Zhang、Yangjie Wu
DOI:10.1016/j.tet.2011.02.044
日期:2011.4
An efficient and facile synthesis of isoquinolines has been described via a tandem reaction of imination of o-halobenzaldehydes with tert-butyl amine and subsequent palladacycle-catalyzed iminoannulation of internal alkynes. This tandem reaction could be carried out successively in one pot without any special operation, and the annulation step could afford isoquinolines derivatives in moderate to good
已经描述了通过邻卤代苯甲醛与叔丁胺的串联反应和随后的palladacycle催化的内部炔基亚氨基环化反应的异喹啉的高效简便合成方法。该串联反应可以在一个锅中连续进行而无需任何特殊操作,并且该环合步骤可以以中等至良好的产率提供具有高区域选择性的异喹啉衍生物。此外,吲哚的简单合成是通过palladacycle催化的o-碘苯胺或o-溴苯胺与内部炔烃的环合反应实现的。