<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Gold-Catalyzed Cascade Cyclization of Diazo-tethered Alkynes"^^ . "In Chapter 2, a gold-catalyzed domino annulation of diazo-tethered alkynes with nitriles proceeds through a sequential 6-endo-dig cyclization/nitrile insertion/C-H functionalization. This protocol offers a general and modular strategy for the rapid assembly of benzophenanthridine derivatives with a broad functional-group tolerance. Moreover, this methodology, using readily available nitriles as the nitrogen source, represent a versatile platform for the construction of benzophenanthridine frameworks.\r\n \r\nIn Chapter 3, an unprecedented dichotomy in the regioselectivity of carbohydroxylation of diazo-tethered alkynes was observed. The gold-catalyzed 6-endo-dig cyclization leads to the quinoid-carbene species, terminated by direct O-H insertion under additive-free conditions, while the reaction in the presence of Et3N(HF)3 undergoes an O-H ortho-insertion of carbene/rearrangement to give the dihydroxynaphthalene isomers as the major products.\r\n \r\nIn Chapter 4, the gold-catalyzed carbofluorination of diazo-tethered alkynes provides a facile, efficient, and atom-economical route to α-fluoronaphthalene derivatives. An intermediate endocyclic gold carbene, generated by an intramolecular 6-endo-dig cyclization, promotes a carbene H-F insertion to afford the desired products."^^ . "2022" . . . . . . . "Cheng"^^ . "Zhang"^^ . "Cheng Zhang"^^ . . . . . . "Gold-Catalyzed Cascade Cyclization of Diazo-tethered Alkynes (PDF)"^^ . . . "PhD_Thesis_Cheng_Zhang.pdf"^^ . . . "Gold-Catalyzed Cascade Cyclization of Diazo-tethered Alkynes (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Gold-Catalyzed Cascade Cyclization of Diazo-tethered Alkynes (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Gold-Catalyzed Cascade Cyclization of Diazo-tethered Alkynes (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Gold-Catalyzed Cascade Cyclization of Diazo-tethered Alkynes (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Gold-Catalyzed Cascade Cyclization of Diazo-tethered Alkynes (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #30609 \n\nGold-Catalyzed Cascade Cyclization of Diazo-tethered Alkynes\n\n" . "text/html" . . . "540 Chemie"@de . "540 Chemistry and allied sciences"@en . .