emitting complexes, the best results were obtained with the 2-(4-trifluoromethylphenyl)-5,6,7,8-tetrahydroquinoline basedplatinum(II) complex. A maximum luminous efficiency of 4.88 cd A−1 and a power efficiency of 4.65 lm W−1, respectively, were achieved. Employing the red emitting phenylisoquinoline basedcomplex as an emitter, colour-stable and efficient (4.71 cd A−1, 5.12 lm W−1) devices were obtained
报道了一系列由蓝绿色到红色发光的磷光铂(II)配合物在溶液处理的多层有机发光二极管(OLED)中的合成,光物理性质和作为发射体的应用。这些复合物包括苯基异喹啉,取代的苯基吡啶或四氢喹啉作为C ^ N环金属配体和 二戊酰甲烷作为辅助配体。取决于C ^ N环金属化配体的结构和基质中的掺杂剂浓度,这些铂(II)配合物表现出不同的聚集趋势。该性质影响所研究化合物的光致发光光谱和所制造的OLED的颜色稳定性。使用发出蓝绿色至黄绿色的配合物,基于2-(4-三氟甲基苯基)-5,6,7,8-四氢喹啉的铂(II)配合物可获得最佳结果。分别实现了4.88 cd A -1的最大发光效率和4.65 lm W -1的功率效率。使用红色发光苯基异喹啉基于复杂的作为发射极,颜色稳定的和有效的(4.71光盘-1,5.12流明w ^ -1)获得的设备。
Base-Promoted/Gold-Catalyzed Intramolecular Highly Selective and Controllable Detosylative Cyclization
作者:Chenghao Zhu、Lin Qiu、Guangyang Xu、Jian Li、Jiangtao Sun
DOI:10.1002/chem.201502073
日期:2015.9.7
controllable and synthetically useful base‐promoted intramolecular detosylative cyclization of bis‐N‐tosylhydrazones has been achieved, affording N‐containing heterocycles and cyclic olefins under transition‐metal‐free or gold‐catalyzed procedures, respectively. Moreover, an effective and practical metal‐free or gold‐catalyzed approach to synthesize polycyclic aromatic compounds is also reported.
Generation of β-Keto Radicals from Cyclopropanols Catalyzed by AgNO<sub>3</sub>
作者:Shunsuke Chiba、Zhengyan Cao、Serry Atta Atta El Bialy、Koichi Narasaka
DOI:10.1246/cl.2006.18
日期:2006.1
Various β-keto radicals are generated from cyclopropanols by treatment with a catalytic amount of AgNO3 and (NH4)2S2O8 as a reoxidant in the presence of pyridine. Thus, generated β-keto radicals react with alkenes to yield addition products.
Reaction of phenylvinylketone with cyclopentanone under thermal conditions resulted in novel domino products, 1,5,9-triketones along with the expected 1,5-diketones. The 1,5,9-triketones were formed via a Michael–Michael-rearrangement pathway. On the other hand, reaction under basic conditions furnished a spiro[4.5]decanone, formed by domino pathways involving Michael–Michael-aldol condensation reactions
苯基乙烯基酮与环戊酮在热条件下的反应产生了新的多米诺骨牌产品1,5,9-三酮以及预期的1,5-二酮。1,5,9-三酮是通过迈克尔-迈克尔重排途径形成的。另一方面,在基本条件下的反应提供了螺[4.5]癸酮,它是由涉及迈克尔-迈克尔-奥尔多缩合反应的多米诺途径形成的。微波介导的1,5,9-三酮的还原胺化-环化反应提供了全氢环戊四[ ij ]喹啉嗪衍生物。
Microwave‐Mediated Facile Synthesis of Steroid‐like 1,5‐Diketones from Mannich Salts
作者:H. Surya Prakash Rao、E. Poonguzhali、S. P. Senthilkumar
DOI:10.1080/00397910701845514
日期:2008.2.1
Abstract A facilesynthesis of some diketones that fit into a steroid motif was achieved from Mannich salts and cyclic ketones under microwave irradiation.