A compound having a structure of the formula Ir(L
A
)(L
B
), in which L
A
is a bidentate, tridentate, tetradentate, pentadentate, or hexadentate ligand and L
B
is a monodentate, bidentate, tridentate, or tetradentate ligand, or not present, and where the total denticity of L
A
plus L
B
is 6, and L
A
includes at least one structure of Formula I:
is disclosed as a useful phosphorescent emitter compound.
Palladium-Catalyzed Direct Monoarylation of Aryl C−H Bonds with Iodoarenes
作者:Li Su、Dong-Dong Guo、Bin Li、Shi-Huan Guo、Gao-Fei Pan、Ya-Ru Gao、Yong-Qiang Wang
DOI:10.1002/cctc.201700138
日期:2017.6.8
transition-metal-catalyzed direct arylation of nonactivated aryl C−Hbonds with iodoarenes has emerged as an important method for the construction of biaryls. Generally, the direct arylation reaction proceeds in the presence of stoichiometric Ag additives; moreover, the diarylation product is often unavoidable if there are two identical aromatic C−Hbonds in the substrate. Herein we disclose an efficient Pd(
过渡金属催化的未活化芳基CH键与碘代芳烃的直接芳基化已成为构建联芳基的重要方法。通常,直接芳基化反应在化学计量的Ag添加剂的存在下进行;优选地,在室温下进行。此外,如果在底物中存在两个相同的芳族CH键,则通常不可避免地存在二芳基化产物。在这里,我们公开了一种有效的Pd(OAc)2 /三氟乙酸/ O 2催化体系,该体系在无银条件下促进各种芳族CH键与各种碘代芳烃的直接芳基化反应。偶联反应具有完全的单芳基化选择性。这种方法为联芳烃提供了一种简单,便捷且经济的途径。
Directing group assisted rhodium-catalyzed formal C–H arylation and carbonylative arylation of arenes with aryl halides in the presence of CO
作者:Houyun Teng、Xiaoyuan Shao、Zheng-Feng Zhang、Ke-Fang Yang、Ming-Der Su、Li-Wen Xu、Lei Yang
DOI:10.1016/j.jcat.2023.115234
日期:2024.1
A controllable rhodium-catalyzed formal C–H arylation and carbonylative arylation of a variety of readily accessible arenes bearing -containing heterocycles-directing groups and aryl halides under 1 atm of carbon monoxide (CO) was developed. Good to excellent yields of various bi(hetero)aryls and 7-aroyl indolines were obtained using different substrates. Preliminary mechanistic studies support that
CONDENSED PYRIDINES AS ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
申请人:Universal Display Corporation
公开号:EP3301088A1
公开(公告)日:2018-04-04
Novel phosphorescent metal complexes containing ligands having the Formula I:
bearing either a naphthalene or other fused heterocycle moieties such as benzofuran and benzothiophene useful as emitters in OLEDs and improve the device efficiency and the FWHM of the emission.
含有式 I 配体的新型磷光金属配合物:
含有萘或其他融合杂环分子(如苯并呋喃和苯并噻吩)的新型磷光金属配合物,可用作有机发光二极管中的发射器,并能提高设备效率和发射的 FWHM。