Regio- and Stereoselective Route to Tetrasubstituted Olefins by the Palladium-Catalyzed Three-Component Coupling of Aryl Iodides, Internal Alkynes, and Arylboronic Acids
作者:Chengxiang Zhou、Richard C. Larock
DOI:10.1021/jo048265+
日期:2005.5.1
The Pd-catalyzed three-component coupling of readily available aryl iodides, internalalkynes, and arylboronic acids provides a convenient, one-step, regio- and stereoselective route to tetrasubstitutedolefins in good to excellent yields, although electron-poor aryl iodides and dialkylalkynes normally afford only low yields under our standard reaction conditions. The proper combination of substrates
An Efficient, Regio- and Stereoselective Palladium-Catalyzed Route to Tetrasubstituted Olefins
作者:Chengxiang Zhou、Daniel E. Emrich、Richard C. Larock
DOI:10.1021/ol034435d
日期:2003.5.1
An efficient, regio- and stereoselectivepalladium-catalyzed route to tetrasubstituted olefins has been developed, which involves the intermolecular coupling of an aryl iodide, an internal alkyne, and an arylboronic acid. The reaction involves cis-addition of the aryl group from the aryl halide to the less hindered or less electron-poor end of the alkyne, while the aryl group from the arylboronic acid
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