BF3⋅Et2O‐catalyzed C2‐selective C−H borylation of indoles with bis(pinacolato)diboron was developed to afford indole‐2‐boronicacid pinacol esters. A variety of functional groups were tolerated, and other heteroarenes like pyrrole and benzo[b]thiophene were also suitable substrates. An electrophilic substitution mechanism was proposed based on the preliminary mechanisticstudies. This novel transformation utilizes
[<i>d</i>]-Carbon–carbon double bond engineering in diazaphosphepines: a pathway to modulate the chemical and electronic structures of heteropines
作者:Yi Ren、Melda Sezen、Fang Guo、Frieder Jäkle、Yueh-Lin Loo
DOI:10.1039/c6sc00519e
日期:——
installation of π-conjugated substituents having diverse chemistries at the [d]-CC doublebondposition of heteropine core allows us to effectively control the chemical and electronic structures in both the ground and excited states of these diazaphosphepines. This functionalization has led to a diverse set of crystal structures, which has in turn provided access to rich photophysical and redox properties
我们使用磷胺 (P-N) 化学设计并合成了第一个 7 元二氮杂膦的例子。与以前的异源功能方案不同,在 [ d ]-C处安装具有不同化学性质的 π 共轭取代基杂碱核心的 C 双键位置使我们能够有效地控制这些二氮杂膦的基态和激发态的化学和电子结构。这种功能化导致了多样化的晶体结构,这反过来又提供了丰富的光物理和氧化还原特性。特别令人感兴趣的是我们的非芳香杂酚和扭曲的分子内电荷转移中平面 π 共轭骨架的证据,这些证据从未报道过杂酚。在二氮杂膦的[ d ]-位引入电子接受取代基导致杂多碱比迄今为止报道的任何杂多碱都更缺乏电子。作为概念证明,我们已经制造了以杂甙作为非富勒烯受体的有机太阳能电池。
COMPOSITES COMPRISING RIGID-ROD POLYMERS AND GRAPHENE NANOPARTICLES AND PROCESS FOR MAKING THE SAME
申请人:DANG Thuy D.
公开号:US20150218730A1
公开(公告)日:2015-08-06
The present invention relates to composites comprising rigid-rod polymers and graphene nanoparticles, processes for the preparation thereof, nanocomposite films and fibers comprising such composites and articles containing such nanocomposite films and fibers.
the reference molecules, which is probably due to the intramolecular chargetransfer (ICT) from electron-donating carbazole to electron-withdrawing [d]-Ars. Upon the oxidation of the P-centers, PLQYs of DPP-CBZs increased. Furthermore, photophysical studies and theoretical studies suggested that the carbazole group had a strong impact on the structures of DPP-CBZs. As a proof of concept, we showed that