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.
Highly emissive organic solids with remarkably broad color tunability based on N,C-chelate, four-coordinate organoborons
作者:Aslam C. Shaikh、Dnyanesh S. Ranade、Shridhar Thorat、Arunava Maity、Prasad P. Kulkarni、Rajesh G. Gonnade、Parthapratim Munshi、Nitin T. Patil
DOI:10.1039/c5cc06351e
日期:——
Molecular fluorophores based on N,C-chelatefour-coordinateorganoborons exhibit tunable solid-state emission colors that cover the whole visible region from blue to red. The emission color can be tuned through the...
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。
push–pull (iso)quinolines were studied. The compounds were synthesized by well‐established and straightforward methodologies. The materials exhibited not only emission solvatochromism in a variety of nonpolar solvents, but also tunable halochromism. Some of the compounds remained moderately luminescent after protonation and had a red emissive form, which was used to obtain white‐light emission, both