Iron-Catalysed [3+3] Annulation of Oxime Acetates and Enaminones towards the Synthesis of Multi-Substituted Pyridines

A direct access to unsymmetrical and symmetrical multi-substituted pyridines has been accomplished via iron-catalysed [3+3] annulation of oxime acetates with enaminones. This protocol is featured by easily available starting materials, no requirement of expensive additives and ligands, operational simplicity, and good tolerance with diverse functional groups.

Automated summary

A direct synthesis of unsymmetrical and symmetrical multi-substituted pyridines has been achieved through iron-catalyzed [3+3] annulation of oxime acetates with enaminones. This method showcases readily available starting materials, no need for expensive additives and ligands, operational simplicity, and excellent tolerance towards diverse functional groups.