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.
一种I2/Cu体系报告的芳基β-酮酯的自排序多米诺反应可将其转化为对称的1,4-烯二酮。
A facile synthesis of indole–furan conjugates via integration of convergent and linear domino reactions
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.