Palladium-catalyzed One-step Synthesis of Symmetrical Diaryl Sulfones from Aryl Halides and a Sulfur Dioxide Surrogate
作者:Hiromichi Tanaka、Hideyuki Konishi、Kei Manabe
DOI:10.1246/cl.190300
日期:2019.8.5
A convenient method for the one-step synthesis of symmetrical diaryl sulfones from aryl halides has been developed. A keystone of the method is the use of K2S2O5, which can be easily and safely han...
Post-synthetically modified SBA-15 with NH<sub>2</sub>-coordinately immobilized iron-oxine: SBA-15/NH<sub>2</sub>-FeQ<sub>3</sub> as a Fenton-like hybrid catalyst for the selective oxidation of organic sulfides
作者:Habib Golchin Hosseini、Sadegh Rostamnia
DOI:10.1039/c7nj02742g
日期:——
We herein report the synthesis and catalysis of SBA-15 grafted iron-oxine. SBA-15/NH2-FeQ3 showed efficient catalytic activity in sulfide oxidation.
Method for preparing sulfone or sulfoxide compound
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:US20030171589A1
公开(公告)日:2003-09-11
There is provided a method for preparing a sulfone or sulfoxide compound, characterized in that a sulfide compound is allowed to react with hydrogen peroxide in the presence of a metal oxide catalyst formed by the reaction of hydrogen peroxide with at least one metal or metal compound selected from tungsten metal; molybdenum metal; a tungsten compound comprising tungsten and a Group IIIb, IVb, Vb, or VIb element exclusive of oxygen; and a molybdenum compound comprising molybdenum and a Group IIIb, IVb, Vb, or VIb element exclusive of oxygen.
Umpolung Synthesis of Pyridyl Ethers by Bi
<sup>V</sup>
‐Mediated O‐Arylation of Pyridones
作者:Katie Ruffell、Liliana C. Gallegos、Kenneth B. Ling、Robert S. Paton、Liam T. Ball
DOI:10.1002/anie.202212873
日期:2022.12.19
We demonstrate that sterically- and electronically-diverse pyridyl ethers can be accessed via BiV-mediated C−O coupling of 2- or 4-pyridones with arylboronic acids. Use of a bismacyclic reagent not only confers modularity on our methodology, but also results in highly regioselective O-arylation that is unprecedented for BiV.
我们证明可以通过 Bi V介导的 2- 或 4- 吡啶酮与芳基硼酸的 C−O 偶联获得空间和电子多样性的吡啶基醚。双环试剂的使用不仅赋予我们的方法模块化,而且还导致高度区域选择性的 O-芳基化,这对于 Bi V来说是前所未有的。
Photosensitive polyimide composition and photoresist film made thereof
申请人:eChem Solutions Corp.
公开号:US11029598B2
公开(公告)日:2021-06-08
The present invention provides a photosensitive polyimide composition comprising a polyimide resin having a structural unit represented by the formula (1) and a structural unit represented by the formula (2), a quinonediazide sulfonate, a thermal curing agent, and a thermal acid generator.
In the formulas (1) and (2), n is an integer of 10 to 600, Ar1 is a tetravalent organic group; Ar2 is a divalent to tetravalent organic group; Ar3 is a divalent aromatic group; and R1 is an OH group or a COOH group. The present invention also provides a photoresist film made of the above-mentioned photosensitive polyimide composition.