<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Gold-Catalyzed Regio- and Stereoselective \r\nAcyloxyalkynylations and Cycloadditions of Alkynes"^^ . "In Chapter 2, multi-substituted alkenes are accessible by a gold-catalyzed \r\nacyloxyalkynylation of ynamides with ethynylbenziodoxolones (EBXs) in an \r\natom-economic fashion. The EBX reagents act as bifunctional reactants providing both the nucleophilic carboxylate as well as the alkynyl entity. Overall this cascade involves the formation of an alkynyl Au(III) species, stereoselective C(sp)-C(sp2) bond formation and C-O coupling at the alkynyl position of the ynamides. The introduced method features mild conditions and wide substrate scope. A number of tetrasubstituted amide enol 2-iodobenzoates bearing diverse functionalities were prepared in good to excellent yield. DFT calculations exlain the observed regioselectivity. The synthetic potential of the sequence was further documented by a number of selected follow-up transformations.\r\nIn Chapter 3, Tetrasubstituted alkenes including the ester and ether group, is of great interest in chemistry and material sciences. A variety of tetrasubstituted enol ether 2-iodobenzoate derivatives were prepared in good yields at room temperature through a gold-catalyzed acyloxyalkynylation of ynol ethers with ethynylbenziodoxolones (EBXs), which act as bifunctional reactants in an atom-economic fashion. \r\nFurthermore, the mechanism involves an in situ formed alkynyl Au(III) species and a gram-scale reaction was efficiently conducted.\r\nIn Chapter 4, an efficient method for the construction of highly functionalized new spirooxindolocarbamates from a gold-catalyzed cycloaddition reaction of terminal alkyne and ynamides with isatin-derived ketimines is described. This protocol features easily accessible starting materials and good functional group compatibility enabling the introduction of various functionalized alkyne groups into cyclic carbamates. Gram-scale synthesis and proposed mechanism are also presented."^^ . "2023" . . . . . . . "Yaowen"^^ . "Liu"^^ . "Yaowen Liu"^^ . . . . . . "Gold-Catalyzed Regio- and Stereoselective \r\nAcyloxyalkynylations and Cycloadditions of Alkynes (PDF)"^^ . . . "Doctoral Thesis_Yaowen Liu_.pdf"^^ . . . "Gold-Catalyzed Regio- and Stereoselective \r\nAcyloxyalkynylations and Cycloadditions of Alkynes (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Gold-Catalyzed Regio- and Stereoselective \r\nAcyloxyalkynylations and Cycloadditions of Alkynes (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Gold-Catalyzed Regio- and Stereoselective \r\nAcyloxyalkynylations and Cycloadditions of Alkynes (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Gold-Catalyzed Regio- and Stereoselective \r\nAcyloxyalkynylations and Cycloadditions of Alkynes (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Gold-Catalyzed Regio- and Stereoselective \r\nAcyloxyalkynylations and Cycloadditions of Alkynes (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #32582 \n\nGold-Catalyzed Regio- and Stereoselective \nAcyloxyalkynylations and Cycloadditions of Alkynes\n\n" . "text/html" . . . "540 Chemie"@de . "540 Chemistry and allied sciences"@en . .