54916-28-8Relevant articles and documents
Identification of an Oxalamide Ligand for Copper-Catalyzed C?O Couplings from a Pharmaceutical Compound Library
Chan, Vincent S.,Krabbe, Scott W.,Li, Changfeng,Sun, Lijie,Liu, Yue,Nett, Alex J.
, (2019/04/30)
A typical pharmaceutical compound library is stocked with molecular diversity and could provide a platform for the discovery of new ligand structures. Herein, we describe the use of this approach in combination with high throughput screening to identify N,N’-bis(thiophene-2-ylmethyl)oxalamide as a ligand that is generally effective for copper-catalyzed C?O cross-couplings to prepare both biarylethers as well as phenols under mild conditions.
HETEROCYCLIC CARBOXYLIC ACID AMIDE LIGAND AND APPLICATIONS THEREOF IN COPPER CATALYZED COUPLING REACTION OF ARYL HALOGENO SUBSTITUTE
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Paragraph 0272-0273, (2019/05/15)
Provided are a heterocyclic carboxylic acid amide ligand and applications thereof in a copper catalyzed coupling reaction. Specifically, provided are uses of a compound represented by formula (I), definitions of radical groups being described in the specifications. The compound represented by formula (I) can be used as the ligand in the copper catalyzed coupling reaction of the aryl halogeno substitute, and is used or catalyzing the coupling reaction for forming the aryl halogeno substitute having C—N, C—O, C—S and other bonds.
Novel EDA transient electron donor-acceptor complex, and preparation method and applications thereof
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Paragraph 0053-0056, (2019/07/04)
The invention relates to a novel EDA transient electron donor-acceptor complex, and a preparation method and applications thereof. The structure of the complex is represented in the description, wherein R1 represents an electron-withdrawing group such as cyano, nitro, acetyl, trifluoromethyl, and the like; R2 represents any one substituent group such as hydrogen, an alkyl group (methyl, ethyl, etc.), chlorine, bromine, iodine, methoxyl, nitro, and the like; and the position of the substituent group can be an o-position, m-position, or p-position. According to the synthesis method, under the induction of visible light, phenol derivatives and electron deficient aryl halide carry out reactions under the action of basic cesium carbonate to generate the complex, and no transition metal catalyst, transition metal ligand, or photo oxidation-reduction agent is added. Through the reaction mechanism, a series of diaryl ether derivatives is prepared. The preparation method has the advantages of mild conditions, greenness, high efficiency, low cost, and simple operation.