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
Aerobic Oxidative Heck/Dehydrogenation Reactions of Cyclohexenones: Efficient Access to<i>meta</i>-Substituted Phenols
作者:Yusuke Izawa、Changwu Zheng、Shannon S. Stahl
DOI:10.1002/anie.201209457
日期:2013.3.25
catalyst, employing a 6,6′‐dimethyl‐2,2′‐bipyridine ligand, promotes both the aerobic oxidative Heck coupling and dehydrogenation reactions of cyclohexenones. These reactions may be combined in a one‐pot sequence to enable the straightforward synthesis of meta‐substituted phenols (see scheme).
Aryl Fluoride Activation through Palladium–Magnesium Bimetallic Cooperation: A Mechanistic and Computational Study
作者:Chen Wu、Samuel P. McCollom、Zhipeng Zheng、Jiadi Zhang、Sheng-Chun Sha、Minyan Li、Patrick J. Walsh、Neil C. Tomson
DOI:10.1021/acscatal.0c01301
日期:2020.7.17
described a mechanistic study of a palladium-catalyzed cross-coupling of aryl Grignard reagents to fluoroarenes that proceeds via a low-energy heterobimetallic oxidative addition pathway. Traditional oxidative additions of aryl chlorides to Pd complexes are known to be orders of magnitude faster than with arylfluorides, and many palladium catalysts do not activatearylfluorides at all. The experimental
The invention provides methods of treating a bacterial infection in a mammal comprising administering to the mammal a compound of formula I:
wherein A, B, and X have any of the meanings defined in the specification; or a pharmaceutically acceptable salt thereof, as well as novel compounds of formula I and salts thereof and pharmaceutical compositions comprising a compound of formula I or a pharmaceutically acceptable salt thereof.
ORGANIC ELECTROLUMINESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE
申请人:SFC Co., Ltd.
公开号:EP4006123A1
公开(公告)日:2022-06-01
The present invention relates to a polycyclic aromatic derivative and an electroluminescent device comprising same. The electroluminescent device according to the present invention comprises a polycyclic aromatic derivative as a dopant compound in a light-emitting layer thereof and also employs an anthracene derivative having a characteristic structure, as a host in combination therewith, in the light-emitting layer, whereby the electroluminescent device can have excellent color purity, high light-emitting efficiency, and a remarkably improved long lifespan, and thus can be advantageously used in various display devices.