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.
Tandem Rh(III)-Catalyzed C–H Heteroarylation of Indolyl Ketones and Cu(II)-Promoted Intramolecular Cyclization: One-Pot Access to Blue-Emitting Phenanthrone-Type Polyheterocycles
作者:Xingwen Pu、Mangang Zhang、Jingbo Lan、Shuyou Chen、Zheng Liu、Wenbo Liang、Yudong Yang、Min Zhang、Jingsong You
DOI:10.1021/acs.orglett.9b00089
日期:2019.2.15
Disclosed herein is a highly efficient one-pot synthetic strategy to phenanthrone-type polyheterocycles via tandem rhodium(III)-catalyzed ortho-C–H heteroarylation of indolyl ketones and copper(II)-promoted intramolecular cyclization. This protocol enables a library of blue-emitting fluorophores with high quantum yields and narrow full widths at half-maximum to be rapidly built from readily available
本文公开了一种高效的一锅合成策略,该方法通过串联铑(III)催化吲哚基酮的邻位-C-H杂芳基化和铜(II)促进的分子内环化反应来合成菲咯啉类多杂环化合物。该协议可以从容易获得的基质中快速构建具有高量子产率和半峰全宽的蓝色发射荧光团库,其中6,6,7,9,12-五甲基-6,12-二氢5 H-苯并呋喃[2,3- a ]咔唑-5-酮(4a)表现出纯蓝色发射,其国际发光委员会坐标为(0.15,0.09),在CH 2中的高量子产率为85%Cl 2溶液。
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。