Selective synthesis of three product classes from imine and carboxylic acid precursors via direct imine acylation
作者:James A. Rossi-Ashton、Richard J. K. Taylor、William P. Unsworth
DOI:10.1039/c7ob02039b
日期:——
Three divergent Direct Imine Acylation (DIA) procedures are reported that allow the selective generation of δ-lactams, β-lactams and tetrahydropyrimidinones (via a novel three-component coupling) from imine and carboxylic acid precursors. All operate via initial N-acyliminium ion formation and diverge depending on the reaction conditions and nature of the substrates.
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.