Direct Imine Acylation for Molecular Diversity in Heterocyclic Synthesis
作者:William P. Unsworth、Graeme Coulthard、Christiana Kitsiou、Richard J. K. Taylor
DOI:10.1021/jo402768r
日期:2014.2.7
Imines and carboxylic acids have been directly coupled using propylphosphonic acid anhydride and NEt(i-Pr)2 to give N-acyliminium ions, which were intramolecularly trapped with oxygen, nitrogen, sulfur, and carbon nucleophiles to provide a wide range of structurally diverse heterocycles.