本发明公开了一种多取代喹啉配位的铱杂配化合物及其制备方法,以及该化合物在电致发光材料方面的应用。该化合物的配体修饰包括2位取代的苯基中3,5双取代(Rd Rd)、4位取代(Re)和3,4,5三取代(Rd Re Rd)苯基,多取代喹啉配位的铱杂配化合物具体合成路径为:通过胺酯交换反应、酸催化下的Skraup环缩合反应和羟基卤化反应生成多取代的喹啉,再通过Suzuki偶联反应即可以得到配体。此路径避免了烷基的suzuki偶联的反应和多个反应位点竞争的副反应,可以提高合成效率和降低提纯难度。根据这些分子的光谱特征和化合物改造功能,很明确的这类铱杂配化合物可以作为电致发光材料在有机光电电器中应用。
Silver-Catalyzed Three-Component Approach to Quinolines Starting from Anilines, Aldehydes, and Alcohols
作者:Xu Zhang、Zhiqiang Wang、Wenmin Liu、Ruixue Sun、Xuefeng Xu、Yanlei Yan
DOI:10.1055/s-0035-1561916
日期:——
A silver-catalyzed sequential formation of two C–C bonds for the construction of a series of polysubstituted quinolines from anilines, aldehydes, and alcohols under mild conditions has been developed. The transformation is effective for a broad range of substrates, including aliphatic alcohols, arylalkanols, cycloalkanols, and ethylene glycol, thereby permitting the expansion of the constituent architectures
Lewis acid catalyzed reactivity switch: pseudo three-component annulation of nitrosoarenes and (epoxy)styrenes
作者:Anisha Purkait、Subhajit Saha、Santanu Ghosh、Chandan K. Jana
DOI:10.1039/d0cc02650f
日期:——
Lewis acid catalyzed alteration of annulation pattern allowed formation of arylquinolines via C–H functionalization of nitrosoarenes and C–C cleavage of (epoxy)styrene.
Synthesis of Polysubstituted Quinolines via Transition-Metal-Free Oxidative Cycloisomerization of <i>o</i>-Cinnamylanilines
作者:Mohammad Rehan、Gurupada Hazra、Prasanta Ghorai
DOI:10.1021/acs.orglett.5b00419
日期:2015.4.3
An efficient synthesis of 2-aryl 4-substituted quinolines from stable and readily available o-cinnamylanilines, prepared from anilines and cinnamylalcohols, has been developed. The reaction occurred via a regioselective 6-endo-trig intramolecular oxidative cyclization using (KOBu)-Bu-t as a mediator and DMSO as an oxidant at rt. The reaction showed a broad substrate scope with good to excellent yields.
Silver-Mediated C–H Activation: Oxidative Coupling/Cyclization of <i>N</i>-Arylimines and Alkynes for the Synthesis of Quinolines
A silver-mediated tandem protocol for the synthesis of quinolines involving the oxidative coupling/cyclization of N-arylimines and alkynes has been developed. We demonstrated that scenario-dependent metalation could occur either at the ortho C-H bond of an N-arylimine through protonation-driven enhancement of acidity or at the terminal C-H bond of an alkyne by virtue of the carbophilic pi-acidity of silver. The diverse set of mechanistic manifolds implemented with a single type of experimental protocol points toward the importance of stringent reactivity analysis of each individual potentially reactive molecular site. Importantly, the direct arene C H bond activation provides a unique and distinct mechanistic handle for the expansion of reactivity paradigms for silver. As expected, the protocol allows for the incorporation of both internal and terminal alkynes into the products, and in addition, both electron-withdrawing and -donating groups are tolerated on N-arylimines, thus enabling the vast expansion of substituent architectures on quinoline framework. Further, an intriguing phenomenon of structural isomerization and chemical bond cleavage has been observed for aliphatic internal alkynes.
Nishio, Takehiko; Omote, Yoshimori, Journal of the Chemical Society. Perkin transactions I, 1983, # 8, p. 1773 - 1775