Electrochemical oxidation synergizing with Brønsted-acid catalysis leads to [4 + 2] annulation for the synthesis of pyrazines
作者:Kun Liu、Chunlan Song、Jiarong Wu、Yuqi Deng、Shan Tang、Aiwen Lei
DOI:10.1039/c8gc03786h
日期:——
Electrochemical oxidative [4 + 2] annulation for the synthesis of pyrazines.
电化学氧化[4 + 2]环化合成吡嗪。
Gold(I)-catalyzed direct C–H arylation of pyrazine and pyridine with aryl bromides
作者:Ming Li、Ruimao Hua
DOI:10.1016/j.tetlet.2009.01.059
日期:2009.4
in good to high yields. For electron-poor aryl bromides, the addition of AgBF4 is the crucial point to accelerate the coupling reaction to give the arylated products in moderate yields. Pyridine also reacts with electron-rich aryl bromides catalyzed by Cy3PAuCl to give a mixture of arylated regioisomers in moderate yield. However, in order to realize the direct C–H arylation of pyridine with electron-poor
their corresponding palladium(II) complexes of the type [Pd(L)(PPh3)] were synthesized and characterized by using FT-IR, UV–visible, 1H, and 13C NMR and spectroscopic techniques. And single-crystal XRD data revealed that all these complexes were adopted a distorted-square planar structure. These Pd (II) complexes were employed as catalysts for the Suzuki-Miyaura cross-coupling reactions of 2-chloropyrazine
合成并表征了四种新型 ONO 钳型腙配体(H 2 L1、H 2 L2、H 2 L3 和 H 2 L4)及其相应的 [Pd(L)(PPh 3 )] 型钯 (II) 配合物通过使用 FT-IR、紫外可见、1 H 和13 C NMR 和光谱技术。单晶XRD数据显示,所有这些配合物均采用扭曲方形平面结构。这些 Pd (II) 配合物被用作 2-氯吡嗪与各种芳基硼酸的 Suzuki-Miyaura 交叉偶联反应的催化剂,并在 H 2中的优化条件下发现了优异的活性O/甲苯介质。催化反应在开瓶条件下以较低的催化剂负载量(0.01%)进行良好。该催化剂表现出优异的可回收性。
Electron transport material, an OLED display panel and an electronic device compromising the same
申请人:SHANGHAI TIANMA AM-OLED CO., LTD.
公开号:US11133476B2
公开(公告)日:2021-09-28
The present disclosure relates to an electron transport material having a structure represented by formula (I). The present disclosure enhances the glass transition temperature of the material by way of increasing the molecular weight thereof through modifying phenanthroline, without influencing the electron transport property of the material. A novel type of electron transport material having a glass transition temperature of more than 100° C. is designed by the present disclosure. The compound provided by the present disclosure is used as an electron transport material, i.e. as an electron transport layer; and the compound is doped with metals for use as an electron injection layer, thereby improving the efficiency of an OLED device and reducing the operation voltage.
Compounds Which Bind to the Active Site of Protein Kinase Enzymes
申请人:Birault Veronique
公开号:US20090163515A1
公开(公告)日:2009-06-25
The present invention relates to a compound and a group of compounds which are inhibitors of Rho kinase (ROK, ROCK). In addition, the invention relates to methods of treatment and use of the compounds in the manufacture of a medicament for application to a number of therapeutic indications including cardiovascular disease (coronary vasospasm, hypertensive disease, arteriosclerosis), stroke, cancer, erectile dysfunction, asthma, osteoporosis, glaucoma and AIDS. The compounds can be used in screening programmes against protein kinases. The invention also provides methods for making compounds and libraries that include these compounds.