Cu-Catalyzed Cascade Reaction of Isoxazoles with Diaryliodonium Salts for the Synthesis of Acridines
作者:Shangrong Zhu、Xuechen Lu、Qiuneng Xu、Jian Li、Shenghu Yan
DOI:10.2174/1570178617666200225125427
日期:2020.12.8
A straightforward and efficient synthesis of acridinederivatives via a copper-catalyzed cascade reaction among isoxazoles and diaryliodoniumsalts is achieved. Various mono-, multi-substituted and 9-substituted acridinederivatives could be obtained in moderate to good yields. The process has gone through tandem double arylation and Friedel-Craftsreactions.
Rh(<scp>iii</scp>)-Catalyzed bilateral cyclization of aldehydes with nitrosos toward unsymmetrical acridines proceeding with C–H functionalization enabled by a transient directing group
作者:Weiming Hu、Qingheng Zheng、Song Sun、Jiang Cheng
DOI:10.1039/c7cc03006a
日期:——
A Rh(III)-catalyzed bilateral cyclization was developed for the efficient construction of acridines proceeding with C–H functionalization whereby in situ formation and removal of an imino transient directing group in the presence of catalytic amount of BnNH2 are achieved. In this transformation, a sequential Rh(III)-catalyzed C–H amination, cyclization, and aromatization process was involved.
emissive state character. The four isomers exhibit gradually increased PL efficiency from low-polarity hexane to medium-polarity tetrahydrofuran (THF), which could be assigned to the formation of hybridizedlocal and charge-transfer (HLCT) states and effectively suppressed non-radiative transition arised from acridine in medium-polarity solvents. Among four isomers, TPA-3AC achieved the best EL performance