WebGold-catalyzed nucleophilic tandem cyclizations of tetraethynylethene derivatives Johannes Sch€adlich a, Marcel Wietecka, Matthias Rudolpha, Mie Højer Larsena, A. Stephen K. Hashmia,b,* aOrganisch-Chemisches Institut, Universit€at Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany b Chemistry Department, Faculty of Science, King … Weband 7). In the presence of 5 mol% of [SPhosAuCl]/AgSbF 6 in DCE at 808C, the expected 1,6-acyloxy migration indeed occurredtogive2ain11%yield(Table 1,entry 8).Theuseof [IPrAuCl] together with AgSbF 6 resulted in complete con-sumption of the starting material after 0.5 h, and the migra-tion productcouldbe isolated in 45%yield (Table 1, entry 9).
Metal-Catalyzed Haloalkynylation Reactions - Chemistry …
WebThese highly active species can react with nitriles in an intermolecular fashion to provide substituted oxazoles. This meth- odology goes through 1,6-carbene shift and offers a … Web25. apr 2024 · The results revealed that all these catalysts could drive the transformation to the desired product 3 except for SPhosAuCl, and the former two led to moderate yields of … disrupting harm unicef
2802-m06S 金触媒を用いたアルキンのヒドロアリール化による縮 …
Web26. júl 2024 · Herein, we describe a gold-catalyzed cascade cyclization of Boc-protected benzylamines bearing two tethered alkyne moieties in a domino reaction initiated by a 6 … Web検討した結果、銀塩存在下においてSPhosAuClを用いると、目的の六員環縮環インドレニン7が効率よく得ら れた。本反応はカルボリン誘導体だけでなく、X部位に酸素原子や炭素原子を有する基質においても進行する ことを確認している。 Web27. jan 2024 · The key intermediate tetracyclic indolenine 289 was formed via SPhosAuCl (288)-promoted cyclization to construct the A–D ring system of akuammiline alkaloids. … c# powershell invoke async