Efficient Synthesis of α-Ketoamides via 2-Acyl-5-aminooxazoles by Reacting Acyl Chlorides and α-Isocyanoacetamides
摘要:
Acyl chlorides and alpha-isocyanoacetamides undergo an efficient reaction in dichloromethane in the presence of triethylamine to give 2-acyl-5-aminooxazoles. Subsequent acid hydrolysis of the 5-aminooxazole moiety leads to alpha-ketoamides in good overall yields.
Reaction between (<i>Z</i>)-Arylchlorooximes and α-Isocyanoacetamides: A Procedure for the Synthesis of Aryl-α-ketoamide Amides
作者:Mariateresa Giustiniano、Valentina Mercalli、Hilde Cassese、Salvatore Di Maro、Ubaldina Galli、Ettore Novellino、Gian Cesare Tron
DOI:10.1021/jo5005444
日期:2014.7.3
(Z)-Arylchlorooximes and alpha-isocyanoacetamides undergo a smooth reaction to produce 1,3-oxazol-2-oxime derivatives in good yields. Opening of the oxazole ring and deoximation reaction give a facile access to aryl-alpha-ketoamide amides, a class of privileged scaffolds in medicinal chemistry and important synthetic intermediates in organic chemistry.