WebRecently, triptycenyl sulfide showed high catalytic reactivity in electrophilic aromatic halogenation by Nishii and Miura 62. Open in a separate window. Fig. 2. Overview of previous and current work. a Previous Lewis base catalysts in halogenation. b Limitations of DMSO as catalysts in halogenation. WebJul 13, 2024 · Novel triptycene-based organoiodine compounds have been synthesised, including chiral iodotriptycenes. Their catalytic potential has been investigated in stereoselective oxidative transformations, where only low enantioselectivities were observed. Abstract
TEMPO-catalyzed dibromination of alkenes and alkynes a . a …
WebMar 2, 2024 · Miura 43 also developed a novel protocol using triptycenyl sulfide to realize electrophilic aromatic halogenation of a variety of unactivated compounds. However, certain Lewis bases show structural complexity or handling inefficiency, which indicates that more simple and convenient Lewis base catalysts are still desirable. WebJul 15, 2024 · Triptycenyl Sulfide: A Practical and Active Catalyst for Electrophilic Aromatic Halogenation using N-Halosuccinimides. Yuji Nishii, Mitsuhiro. Ikeda, Y. Hayashi, S. Kawauchi, M. Miura Chemistry Journal of the American Chemical Society 2024 TLDR norfolk seventh day adventist church
Self-assembly of triptycene-based polymer on cadmium sulfide …
WebMar 19, 2024 · The key is to use triptycenyl sulfide (Trip-SMe) and TfOH to enhance the electrophilicity of SCF 3 fragment through the formation of sulfonium intermediates. … WebAn organocatalytic, highly facile, efficient, and regioselective ortho -chlorination of anilines is described. A secondary ammonium chloride salt has been employed as the catalyst and the reaction can be conducted at room temperature without protection from air and moisture. WebNov 1, 2024 · It was rationalized that the sulfide-captured chlorenium ion may be unable to react with 1a, and then decomposed to sulfoxide 4 . Conditions: 1a (0.025 mmol), Cl + source (1.1–1.5 equiv), catalyst (10 mol %), solvent (1.0 mL), −78 °C, 12 h. Yield was determined by 31 P NMR with triphenylphosphine oxide as the internal standard. how to remove maintenance mode in wordpress