Fluorination of the tetraphenylethene core: synthesis, aggregation-induced emission, reversible mechanofluorochromism and thermofluorochromism of fluorinated tetraphenylethene derivatives
The substitution patterns in fluorinated tetraphenylethenes affect the emission properties, mechano- and thermofluorochromism, compared to those of the parent TPE.
Synthesis of Polysubstituted Alkenes by Heck Vinylation or Suzuki Cross-Coupling Reactions in the Presence of a Tetraphosphane−Palladium Catalyst
作者:Florian Berthiol、Henri Doucet、Maurice Santelli
DOI:10.1002/ejoc.200390161
日期:2003.3
4-tetrakis[(diphenylphosphanyl)methyl]cyclopentane as a catalyst, a range of vinyl bromides undergo Suzukicross-couplings with arylboronic acids in good yields. Furthermore, the catalyst can be used at low loadings, even for reactions of sterically hindered substrates. Mediated by this catalyst, stilbene and 1,1-diphenylethylene undergo Heckreactions with aryl halides to give triarylethylene derivatives
Nickel-Catalyzed Three-Component Domino Reactions of Aryl Grignard Reagents, Alkynes, and Aryl Halides Producing Tetrasubstituted Alkenes
作者:Fei Xue、Jin Zhao、T. S. Andy Hor、Tamio Hayashi
DOI:10.1021/ja513166w
日期:2015.3.11
Three-component reaction of aryl Grignardreagents, alkynes, and aryl halides in the presence of 1 mol % of NiCl2 proceeded sequentially through carbomagnesiation of the alkyne followed by cross-coupling of the resulting alkenyl Grignardreagent with aryl halide to give tetrasubstituted alkenes in high yields.
Synthesis of Tetraarylethene Luminogens by C−H Vinylation of Aromatic Compounds with Triazenes
作者:Abdusalom A. Suleymanov、Martin Doll、Albert Ruggi、Rosario Scopelliti、Farzaneh Fadaei‐Tirani、Kay Severin
DOI:10.1002/anie.201908755
日期:2020.6.15
Tetraarylethenes are obtained by acid‐induced coupling of vinyl triazenes with aromatic compounds. This new C−H activation route for the synthesis of aggregation‐induced emission luminogens is simple, fast, and versatile. It allows the direct grafting of triarylethenyl groups onto a variety of aromatic compounds, including heterocycles, supramolecular hosts, biologically relevant molecules, and commercial