Target-oriented synthesis: miscellaneous synthetic routes to access 1,4-enediones through the coupling of 1,3-dicarbonyl compounds with multiform substrates
摘要:
Target-oriented synthetic protocol was presented for the synthesis of 1,4-enediones. The approach can efficiently construct 1,4-enediones through different reaction pathways from multiform substrates alpha-halo aromatic ketones, 2-hydroxy-aromatic ketones and methyl carbinols. In this reaction, CuI was found to be the most efficient catalyst. Multiform substrates were also found to perform well to afford the products in a one-pot fashion. (C) 2013 Elsevier Ltd. All rights reserved.
Cu(OTf)<sub>2</sub>-Catalyzed Pummerer Coupling of β-Ketosulfoxides
作者:Regev Parnes、Hagai Reiss、Doron Pappo
DOI:10.1021/acs.joc.7b02708
日期:2018.1.19
The copper(II) trifluoromethanesulfonate-catalyzed Pummerer reaction of β-ketosulfoxides with 1,3-dicarbonyl compounds or π-nucleophiles such as phenols, arenes, and tetraallylsilane is reported. The mild conditions provide an efficient entry to a novel class of polysubstituted 3-alkylthiofuran and polysubstituted 3-thiobenzofuran heterocycles from readily available materials.
Formation of Unsymmetrical 1,4-Enediones via A Focusing Domino Strategy: Cross-Coupling of 1,3-Dicarbonyl Compounds and Methyl Ketones or Terminal Aryl Alkenes
A highly efficient synthesis of unsymmetrical 1,4-enediones from 1,3-dicarbonyl compounds and methyl ketones or terminalarylalkenes has been developed via a focusing domino strategy. Simple and readily available starting materials, mild reaction conditions, and a very simple operation are advantages of the reaction, which allow straightforward synthesis of a variety of unsymmetrical 1,4-enediones
A highly efficient method for the construction of 3a,6a-dihydrofuro[2,3-b]furan derivatives has been developed via a novel bicyclization, which is very valuable for the synthesis of fused furofuran compounds since it is time-saving and catalyst-free. Based on the bicyclization, a coupled domino strategy has been developed to directly construct 3a,6a-dihydrofuro[2,3-b]furan derivatives from methyl ketones
通过新型的双环化,已经开发出了一种高效的3a,6a-二氢呋喃[2,3- b ]呋喃衍生物的构建方法,该方法对于合成熔融呋喃呋喃化合物非常节省时间,并且可以催化催化剂。自由。基于双环化,已开发了一种耦合多米诺骨牌策略,可直接从甲基酮构建3a,6a-二氢呋喃[2,3- b ]呋喃衍生物。
I<sub>2</sub>/Cu-mediated self-sorting domino reaction of aryl β-ketoesters into symmetrical 2-carboalkoxy-1,4-enediones: application to synthesis of pyrazine, β-carboline and quinoxalines
作者:Gandhesiri Satish、Andivelu Ilangovan
DOI:10.1039/c5ra08030d
日期:——
A self-sorting domino reaction of aryl β-ketoesters into symmetrical 1,4-enediones is reported by an I2/Cu system.
The convergent and linear domino reactions have been first integrated, for the first time, to provide an efficient synthesis of indole–furan conjugates from indoles, methyl ketones, and 1,3-dicarbonyl compounds.