AbstractAn iridium(III)‐catalyzed tandem synthesis of amides and amines from esters under solvent‐free conditions is described. A commercially available iridium(III) complex, [Cp*IrCl2]2, with sodium acetate showed the best activity for the synthesis of amides and secondary amines. The amide was formed by ester‐amide exchange which generates an alcohol in situ which is subsequently transformed to a secondary amine via hydrogen autotransfer. This synthetic protocol with high atom economy generates water as the sole by‐product and can afford amides and amines from various esters in a one‐pot reaction, expanding the synthetic versatility of ester transformations.magnified image
Tandem Synthesis of Amides and Secondary Amines from Esters with Primary Amines under Solvent-Free Conditions
作者:Jeongbin Lee、Senthilkumar Muthaiah、Soon Hyeok Hong
DOI:10.1002/adsc.201400319
日期:2014.8.11
AbstractAn iridium(III)‐catalyzed tandem synthesis of amides and amines from esters under solvent‐free conditions is described. A commercially available iridium(III) complex, [Cp*IrCl2]2, with sodium acetate showed the best activity for the synthesis of amides and secondary amines. The amide was formed by ester‐amide exchange which generates an alcohol in situ which is subsequently transformed to a secondary amine via hydrogen autotransfer. This synthetic protocol with high atom economy generates water as the sole by‐product and can afford amides and amines from various esters in a one‐pot reaction, expanding the synthetic versatility of ester transformations.magnified image