TRIARYL PHOSPHINE LIGANDS, PREPARATION METHOD THEREFOR, AND USE IN CATALYSING COUPLING REACTIONS
申请人:DONGGUAN STEPHEN CATALYST CO., LTD.
公开号:US20210147452A1
公开(公告)日:2021-05-20
Provided are triaryl phosphine ligands, as shown in general formulae Ia and Ib, or a mixture thereof, and a preparation method therefor. The invention addresses the deficiencies of biaryl phosphine ligands invented by Buchwald et al. Also provided are a triaryl phosphine coordinated palladium complex, a system composed of triaryl phosphine ligand and a palladium salt or complex, and a use of the triaryl phosphine coordinated palladium complex in catalysing organic reactions, in particular a use in catalysis of coupling reactions involving (pseudo)halogenated aromatic hydrocarbon as substrate.
[EN] TRIARYL PHOSPHINE LIGANDS, PREPARATION METHOD THEREFOR, AND USE IN CATALYSING COUPLING REACTIONS<br/>[FR] LIGANDS DE TRIARYLPHOSPHINE, LEUR PROCÉDÉ DE PRÉPARATION ET LEUR UTILISATION DANS LA CATALYSE DE RÉACTIONS DE COUPLAGE<br/>[ZH] 三联芳单膦配体、它们的制备方法和在催化偶联反应中的用途
Synthesis and Structure of <i>m</i>-Terphenyl Thio-, Seleno-, and Telluroethers
作者:Uzma I. Zakai、Anna Błoch-Mechkour、Neil E. Jacobsen、Leif Abrell、Guangxin Lin、Gary S. Nichol、Thomas Bally、Richard S. Glass
DOI:10.1021/jo101299x
日期:2010.12.17
Several routes for the synthesis of m-terphenyl thio-, seleno-, and telluroethers were investigated. m-Terphenyl iodides react with diphenyl diselenides or ditellurides (CsOH center dot H2O, DMSO, 110 degrees C) to give the desired compounds in 19-84% yield which significantly extends the previously reported such reactions because o-benzyne cannot be an intermediate as previously suggested. However, the most general synthetic route was that involving reaction of 2,6-diaryl Grignard reagents with sulfur, selenium, or tellurium electrophiles. The m-terphenyl thio-, seleno-, and telluroethers were characterized spectroscopically and, in one case, by single-crystal X-ray analysis. Certain of these compounds showed atropisomerism and barriers for interconversion of isomers were determined by variable-temperature NMR spectroscopy. The barriers for interconverting the syn and anti atropisomers increase on going from the analogous S to Se to Te compounds. Calculations on this isomerization revealed that the barriers are due to rotation about the aryl-aryl bond and that the barriers for rotation about the aryl-chalcogen bond are much lower.
Synthesis and structural characterization of two donor-functionalized terphenyl magnesium compounds
作者:Gerd W. Rabe、Mei Zhang-Preße、Florian A. Riederer、Arnold L. Rheingold
DOI:10.1016/j.ica.2010.03.002
日期:2010.6
The synthesis and structural characterization of two novel donor-functionalized terphenyl magnesium compounds, namely (Danip)(2)Mg (1) [Danip = 2,6-di(o-anisyl)phenyl] and [DinapOMg(THF)](2) (Dinap = 2,6-di(o-2-methoxynaphthyl)phenyl; DinapO = 2-(o-2-methoxynaphthyl)-6-(o-2-naphthoxide)phenyl) is reported. Compound 1 represents a first structurally authenticated bis terphenyl magnesium compound, while the molecular structure of dimeric tetrahydrofuran solvated 2 shows a five-coordinate magnesium atom stabilized by a partially demethylated dianionic mixed arylether/aryloxide terphenyl ligand (= DinapO). (C) 2010 Elsevier B. V. All rights reserved.
[EN] HETEROCYCLIC COMPOUND OR SALT THEREOF, AND ELECTRONIC DEVICE INCLUDING SAME<br/>[FR] COMPOSÉ HÉTÉROCYCLIQUE OU SEL DE C DERNIER, ET DISPOSITIF ÉLECTRONIQUE COMPRENANT CE DERNIER<br/>[JA] ヘテロ環化合物又はその塩、及びこれらを含む電子デバイス