Construction of 1,2,5-Tricarbonyl Compounds using Methyl Cyanoacetate as a Glyoxylate Anion Synthon Combined with Copper(I) Iodide-Catalyzed Aerobic Oxidation
作者:Se Hee Kim、Ko Hoon Kim、Jae Nyoung Kim
DOI:10.1002/adsc.201100431
日期:2011.12
A practical and efficientsynthesis of various 1,2,5-tricarbonyl compounds is described. The synthesis has been carried out by a conjugate addition of methyl cyanoacetate to the β-position of α,β-unsaturated carbonyl compounds and a subsequent copper(I) iodide-catalyzed aerobicoxidation. In addition, various α-aryl- and α-alkyl-α-keto esters have been synthesized using a similar approach.
Unexpected Iodine-Promoted Aerobic Oxidation of α-Cyano-δ-keto Esters: A Facile Synthesis of α,δ-Dicarbonyl Esters
作者:Ze Zhang、Hui Xu、Ming-Yue Weng、Hong Chen
DOI:10.1055/s-0040-1707996
日期:2020.6
An efficient and green method for the synthesis of various α,δ-dicarbonyl esters has been developed via a conjugate addition of ethyl cyanoacetates to chalcones and subsequent iodine-promoted aerobic oxidation. The present protocol features mild reaction conditions, high efficiency, easily available starting materials, and broad substrate scope.