118618-32-9Relevant academic research and scientific papers
Method for preparing organic carboxylic ester through combined catalysis of aryl bidentate phosphine ligand
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Paragraph 0054, (2020/05/29)
The invention discloses a method for preparing organic carboxylic ester by combined catalysis of an aryl bidentate phosphine ligand. The method comprises the following steps: under the action of a palladium compound/aryl bidentate phosphine ligand/acidic additive combined catalyst, carrying out a hydrogen esterification reaction on terminal olefin, carbon monoxide and alcohol so as to generate theorganic carboxylic ester with one more carbon than olefin. According to the invention, by adoption of the palladium compound/aryl bidentate phosphine ligand/acidic additive combined catalyst, good catalytic activity and selectivity for the hydrogen esterification reaction of the olefin are achieved, and olefin carbonylation to synthesize organic carboxylic ester can be efficiently catalyzed. Thearyl bidentate phosphine ligand has a rigid skeleton structure of a rigid ligand and the flexibility of a flexible ligand, so the aryl bidentate phosphine ligand has proper flexibility due to the characteristic that the aryl bidentate phosphine ligand is soft and rigid, and a most favorable coordination mode and a stable active structure in space are favorably formed. In addition, the aryl bidentate phosphine ligand has the advantages of high stability, simple and convenient synthesis method and the like; and a novel industrial technology is provided for production of organic carboxylate compounds.
Synthesis and Applications of Unquaternized C-Bound Boron Enolates
Ng, Elvis Wang Hei,Low, Kam-Hung,Chiu, Pauline
, p. 3537 - 3541 (2018/03/21)
A general and facile method to prepare unquaternized C-bound boron enolates by a ligand-controlled O-to-C isomerization is reported. Using this protocol, C-bound pinacolboron enolates have been isolated in pure form for the first time, and have been fully characterized by NMR spectroscopy and X-ray crystallography. In contrast to the general perception, such C-boron enolates are stable without coordinative saturation at the boron. Moreover, C-boron enolates present reactivities that are distinct from the O-boron enolates, and their applications in C-O and C-C bond formations are demonstrated.
AMINE SUBSTITUTED METHANESULFONAMIDE DERIVATIVES AS VANILLOID RECEPTOR LIGANDS
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Page/Page column 51, (2013/04/13)
The invention relates to amine substituted methanesulfonamide derivatives of formula (I) as vanilloid receptor ligands, to pharmaceutical compositions containing these compounds and also to these compounds for use in the treatment and/or prophylaxis of pain and further diseases and/or disorders.
Amine Substituted Methanesulfonamide Derivatives as Vanilloid Receptor Ligands
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Paragraph 0473; 0476, (2013/04/10)
The invention relates to amine substituted methanesulfonamide derivatives as vanilloid receptor ligands, to pharmaceutical compositions containing these compounds and also to these compounds for use in the treatment and/or prophylaxis of pain and further diseases and/or disorders.
Aryl or N-heteroaryl Substituted Methanesulfonamide Derivatives as Vanilloid Receptor Ligands
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Paragraph 0565; 0567, (2013/04/10)
The invention relates to aryl or N-heteroaryl substituted methanesulfonamide derivatives as vanilloid receptor ligands, to pharmaceutical compositions containing these compounds and also to these compounds for use in the treatment and/or prophylaxis of pain and further diseases and/or disorders.
ARYL OR N-HETEROARYL SUBSTITUTED METHANESULFONAMIDE DERIVATIVES AS VANILLOID RECEPTOR LIGANDS
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Page/Page column 85; 86, (2013/04/13)
The invention relates to aryl or N-heteroaryl substituted methanesulfonamide derivatives of Formula (I) as vanilloid receptor ligands, to pharmaceutical compositions containing these compounds and also to these compounds for use in the treatment and/or prophylaxis of pain and further diseases and/or disorders.
Pd-catalyzed decarboxylative cross-couplings of potassium malonate monoesters with aryl halides
Feng, Yi-Si,Wu, Wei,Xu, Zhong-Qiu,Li, Yan,Li, Ming,Xu, Hua-Jian
, p. 2113 - 2120 (2012/03/26)
An efficient catalytic protocol for Pd-catalyzed decarboxylative cross-coupling of potassium malonate monoesters and derivatives with aryl bromides and chlorides are described. Because of its broad applicability, this new catalytic system provides an alternative method for the preparation of diverse aryl acetic acids and derivatives.
