Rational Development of Remote C−H Functionalization of Biphenyl: Experimental and Computational Studies
作者:Zhoulong Fan、Katherine L. Bay、Xiangyang Chen、Zhe Zhuang、Han Seul Park、Kap‐Sun Yeung、K. N. Houk、Jin‐Quan Yu
DOI:10.1002/anie.201915624
日期:2020.3.16
compounds is reported. Compared to the previous approach of installing a complex U-shaped template to achieve a molecular U-turn and assemble the large-sized cyclophane transition state for the remoteC-Hactivation, a synthetically useful phenyl nitrile functional group could also direct remote meta-C-H activation. This reaction provides a useful method for the modification of biaryl compounds because
Metal-Free Generation of γ-Cyanoalkyl Radicals by N-Heterocyclic Carbene Catalysis: Assembly of 6-Cyanoalkyl Phenanthridines
作者:Qianrong Li、Cong-Ying Zhou、Chengming Wang
DOI:10.1021/acs.orglett.2c03808
日期:2022.12.23
number of γ-cyanoalkyl radicals were generated by sustainable N-heterocyclic carbene catalysis in tin-, transition-meal-, and light-free conditions, followed by insertion into biaryl isonitriles, thus leading to the rapid assembly of a variety of diversely functionalized 6-cyanoalkyl phenanthridines. A preliminary mechanism study revealed that a single-electron transfer radical process was possibly involved
Organic electroluminescent device emitting blue light
申请人:CYNORA GMBH
公开号:US10804481B2
公开(公告)日:2020-10-13
The present invention relates to a an organic electroluminescent device comprising a light-emitting layer B comprising a host material HB, a first thermally activated delayed fluorescence (TADF) material EB, and a second TADF material SB, wherein SB transfers energy to EB and EB emits TADF with an emission maximum between 420 and 500 nm.
作者:Anna Bernardi、Stéphane G. Ouellet、Remy Angelaud、Paul D. O’Shea
DOI:10.1016/j.tetlet.2008.09.061
日期:2008.11
A two-step, one-pot procedure using methyl chloroformate and lithium borohydride was developed to transform 2-substituted-oxazolines into alcohols. This methodology is compatible with a wide range of Substrates including heterocyclic, aromatic, and aliphatic functionalized 2-oxazolines. Best results are obtained with electron-rich and ortho substituted 2-aryl-oxazolines. (c) 2008 Elsevier Ltd. All rights reserved.
ORGANIC ELECTROLUMINESCENT DEVICE
申请人:CYNORA GMBH
公开号:US20200303656A1
公开(公告)日:2020-09-24
The present invention relates to organic electroluminescent devices comprising a light-emitting layer B comprising a triplet-triplet annihilation (TTA) material, a thermally activated delayed fluorescence (TADF) material and a near-range-charge-transfer (NRCT) emitter material, which exhibits a narrow—expressed by a small full width at half maximum (FWHM)—emission. Further, the present invention relates to a method for obtaining a desired light spectrum and achieving suitable (long) lifespans of an organic electroluminescent device according to the present invention.