Catalyst shuttling enabled by a thermoresponsive polymeric ligand: facilitating efficient cross-couplings with continuously recyclable ppm levels of palladium
作者:Erfei Wang、Mao Chen
DOI:10.1039/c9sc02171j
日期:——
A polymeric monophosphine ligand WePhos has been synthesized and complexed with palladium(II) acetate [Pd(OAc)2] to generate a thermoresponsive pre-catalyst that can shuttle between water and organic phases, with the change being regulated by temperature. The structure of the polymeric ligand was confirmed with matrix-assisted laser desorption/ionization-time-of-flight (MALDI-TOF) mass spectrometry
Very Fast, Ligand-Free and Aerobic Protocol for the Synthesis of 4-Aryl-Substituted Triphenylamine Derivatives
作者:Chun Liu、Qijian Ni、Jieshan Qiu
DOI:10.1002/ejoc.201100072
日期:2011.6
A fast, convenient and ligand-free protocol for the synthesis of a series of 4-aryl-substituted triphenylamine derivatives by a palladium-catalysed aerobic Suzuki reaction of aryl halides with [4-(diphenylamino)phenyl]boronic acid in aqueous iPrOH is described. Importantly, both aryl bromides and heteroaryl halides afforded good to excellent yields under mild conditions.
Palladium-catalyzed ligand-free and aqueous Suzuki reaction for the construction of (hetero)aryl-substituted triphenylamine derivatives
作者:Chun Liu、Xiaofeng Rao、Xinlong Song、Jieshan Qiu、Zilin Jin
DOI:10.1039/c2ra22275b
日期:——
This paper reports an efficient synthesis of triphenylamine (TPA) derivatives via a palladium-catalyzed Suzuki reaction of (hetero)aryl halides with 4-(diphenylamino)phenylboronic acid (DPBA) in aqueous ethanol under aerobic and ligand-free conditions. Heteroaryl halides, namely pyridyl bromides, quinolyl bromides, pyrimidinyl bromides, 2-chloropyrazine and sulfur-containing heteroaryl bromides, could
本文报告了一个有效的综合 三苯胺(TPA)衍生物通过(杂)芳基卤化物与4-(二苯氨基)苯基硼酸(DPBA)水溶液乙醇在无氧和无配体的条件下。杂芳基卤化物,即吡啶基溴化物,喹啉基溴化物,嘧啶基溴化物,2-氯吡嗪含硫杂芳基溴化物可以与DPBA平稳反应,在温和条件下收率好至极好。此外,芳基溴化物也成功地用于与DPBA的交叉偶联中,并在室温下以高收率提供了产品。的交叉耦合4-溴苄腈与DPBA一起使用,在2分钟内以定量收率得到了所需的产物,导致TOF高达5820 h -1。
FLUORANTHENE DERIVATIVE, LUMINESCENT ELEMENT MATERIAL CONTAINING SAME, AND LUMINESCENT ELEMENT
申请人:Toray Industries, Inc.
公开号:EP2907803A1
公开(公告)日:2015-08-19
The purpose of the present invention is to provide an organic thin-film luminescent element which exhibits improved luminous efficiency, drive voltage and durability life. This fluoranthene derivative is characterized by having a specificstructure that contains a fluoranthene skeleton.
FLUORANTHENE DERIVATIVE, LIGHT-EMITTING DEVICE MATERIAL CONTAINING SAME, AND LIGHT-EMITTING DEVICE
申请人:TORAY INDUSTRIES, INC.
公开号:US20150280139A1
公开(公告)日:2015-10-01
The purpose of the present invention is to provide an organic thin-film luminescent element which exhibits improved luminous efficiency, drive voltage and durability life. This fluoranthene derivative is characterized by having a specific structure that contains a fluoranthene skeleton.