Synthesis of<i>Ortho</i>-alkoxy-aryl Carboxamides via Palladium-Catalyzed Aminocarbonylation
作者:Attila Takács、Artur R. Abreu、Andreia F. Peixoto、Mariette Pereira、László Kollár
DOI:10.1080/00397910802542028
日期:2009.4.7
Abstract Various aryl carboxamides with alkoxy substituents at the ortho-position, applicable as direct intermediates toward novel ligands, were synthesised viaaminocarbonylation of aryl-iodides (2-iodoanisole, 5-chloro-7-iodo-8-methoxy-quinoline, and 5-chloro-7-iodo-8-benzyloxy-quinoline) in the presence of in situ generated palladium(0) catalysts. Simple primary and secondary amines as well as aminoacid
for α-ketoamides has been developed undermildconditions. The facile synthesis of α-ketoamides has been accomplished using aryl vinyl azides and secondary amines at room temperature. The inexpensive and readily available iodine and TBHP easily promoted the oxidative amidation process to afford diketoamide derivatives in high yields. This method involves the synthesis of ketoamide compounds via sequential