[EN] ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME [FR] COMPOSÉ ÉLECTROLUMINESCENT ORGANIQUE ET DISPOSITIF ÉLECTROLUMINESCENT ORGANIQUE COMPRENANT CE COMPOSÉ
METHOD FOR SYNTHESIZING SODIUM 2,2,6,6-TETRAMETHYLPIPERIDIDES
申请人:KOBELCO ECO-SOLUTIONS CO.,LTD.
公开号:US20190359571A1
公开(公告)日:2019-11-28
There is a demand for the development of a technique according to which sodium 2,2,6,6-tetramethylpiperidides (Na-TMPs) can be economically and efficiently synthesized through simple operations including a small number of steps under mild conditions in a short period of time. Also, there is a demand for the development of a technique according to which high-quality Na-TMPs that do not contain lithium or lithium compounds such as Li-TMP can be synthesized. The method for synthesizing sodium 2,2,6,6-tetramethylpiperidides includes a step of obtaining sodium 2,2,6,6-tetramethylpiperidides by reacting, in a reaction solvent, 2,2,6,6-tetramethylpiperidines with a dispersion product obtained by dispersing sodium in a dispersion solvent or an organosodium compound having an aromatic ring obtained through a reaction with a dispersion product obtained by dispersing sodium in a dispersion solvent.
Pd-PEPPSI: Water-Assisted Suzuki−Miyaura Cross-Coupling of Aryl Esters at Room Temperature using a Practical Palladium-NHC (NHC=N-Heterocyclic Carbene) Precatalyst
A Pd‐PEPPSI‐catalyzed (Pd=Palladium, PEPPSI=pyridine‐enhanced precatalyst preparation stabilization and initiation) Suzuki‐Miyaura cross‐coupling of aryl esters via selective C−O cleavage at roomtemperature is reported. The developed catalyst system displays broad substrate scope with respect to both components under practical ambient reactionconditions using readily‐available, cheap, modular, air‐
A new reagent 2-(trifluoromethylsulfonyloxy)pyridine (TFOP) was prepared by the reaction of sodium salt of 2-pyridinol with trifluoromethylsulfonyl chloride in dioxane. The compound TFOP in trifluoroacetic acid has been found to intermolecularly dehydrate from benzoic acid and aromatic hydrocarbons to give the corresponding benzophenones in high yield. It was further elucidated, in the reaction of
A rapid, solvent-free, ligandless and mild method for preparing aromatic ketones from acyl chlorides and arylboronic acids via a Suzuki–Miyaura type of coupling reaction
作者:B.P. Bandgar、A.V. Patil
DOI:10.1016/j.tetlet.2005.08.111
日期:2005.10
Aromatic ketones were synthesized via a palladiumcatalyzedcross-couplingreaction of boronic acids with acylchlorides in the presence of Na2CO3 at room temperature under solvent-free conditions. The ligand-free and mild reaction conditions, highly rapid reaction rate and good to excellent yields are important features of this method.
在室温,无溶剂条件下,在Na 2 CO 3存在下,硼酸与酰氯的钯催化交叉偶联反应合成了芳香酮。无配体和温和的反应条件,快速的反应速率以及良好至极好的收率是该方法的重要特征。
One-Pot Synthesis of Heteroaryl and Diheteroaryl Ketones through Palladium-Catalyzed 1,2-Addition and Oxidation
was developed for the preparation of heteroaryl and diheteroaryl ketonesfrom aldehydes and organoboronic acids through a palladium-catalyzed 1,2-addition and oxidation that uses an aryl iodide as the oxidant. This one-pot process shows high tolerance for a broad range of heterocyclic substrates by using 1.0–3.0 mol-% of the catalyst that is formedfrom allylpalladium chloride dimer and a thioether-imidazolinium