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.
Conjugate Hydrocyanation of Chalcone Derivatives Using Ethyl Cyanoacetate as an Organic Cyanide Source
作者:Zheng Li、Junjun Yin
DOI:10.1002/cjoc.201600860
日期:2017.7
The conjugate hydrocyanation of chalcone derivatives using ethyl cyanoacetate as an organic cyanide source at room temperature under open air and transition metal‐free conditions was described. The protocol has advantages of using relatively cheap, less toxic, stable and easy‐to‐handle cyanating reagent, high yield, and mild reaction condition.
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.