Bisnucleophiles

Author: pdsl

August undefined, 2024

WebDec 28, 2024 · A new method for the synthesis of α-trifluoromethylated tertiary alcohols bearing coumarins is described. The reaction of 3-(trifluoroacetyl)coumarin and pyrrole provided the target compounds with high yields under catalyst-free, mild conditions. The crystal structure of compound 3fa was investigated by X-ray diffraction analysis. The … WebPPh 3 ‑Catalyzed [3 + 2] Spiroannulation of 1C,3N‑Bisnucleophiles Derived from Secondary β‑Ketoamides with δ‑Acetoxy Allenoate: A Route to Functionalized Spiro …

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WebHu Jian; Wei Yabing and Tong, Xiaofeng*, Phosphine-Catalyzed [3+2]Annulations of gamma-Functionalized Butynoates and 1C,3O-Bisnucleophiles: HighlySelective … WebMay 27, 2024 · An oxidative [3+3] annulation of atropaldehyde acetals with various 1,3-bisnucleophiles was developed using either N-bromosuccinimide or copper(II) bromide as oxidizing reagent and Brønsted or Lewis acids as catalyst.The [3+3] annulations can be considered mechanistically as oxidizing reagent-induced acid-acid-catalyzed domino … bottomless brunch revolution bournemouth

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WebFeb 19, 2024 · A wide variety of bisnucleophiles can add across the α,β-unsaturated acylazoliums to form various five and six-membered heterocycles and carbocycles. Moreover, suitably substituted nucleophiles can add to this intermediate and result in valuable products following cascade processes. Employing chiral NHCs in the process … WebDec 1, 2005 · Reactions of acylimines of methyl trifluoropyruvate with C,N-bisnucleophiles gave fluoro-containing heterocycles including the 5-oxo-4,5-dihydro-1H-pyrrole fragment. Discover the world's research ... WebMay 30, 2024 · A straightforward access to tricyclic indoles bearing 3,4-fused seven-membered rings has been established by using 4-aminoindoles as 1,4-bisnucleophiles … hay seed levelsin farm heroes saga

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WebLiu, Jiaqi, "Cobalt-Catalyzed Aerobic Oxidative Cyclization Reactions of Bisnucleophiles: New Methodologies and the Role of Bisnucleophiles in O2 Activation" (2024). Graduate … WebMay 30, 2024 · Abstract. A straightforward access to tricyclic indoles bearing 3,4-fused seven-membered ring has been established by using 4-aminoindoles as 1,4-bisnucleophiles in three-component reactions. 1H ... hay seed near meWebA tertiary amine-catalyzed formal (3+n) annulation of 2-(acetoxymethyl)buta-2,3-dienoate with 1,n-binucleophiles has been developed, which provides a facile entry to heterocyclic compounds. The mechanism, involving tandem SN2′–SN2′ substitution and Michael addition, has also been established. hayseed pentland

"To a freshly prepared solution of sodium methoxide containing sodium (0.05 g, 2.4 mmol) dissolved in methanol (6 mL), cysteamine hydrochloride (0.13 g, mmol) was added. After stirring under N2 atmosphere for 30 min at r.t, imidate (1 mmol) was added. The mixture was stirred again until the total disappearance … See more To a stirred solution of imidate (13.5 g, 0.1 mol) and pyridine (8.84 mL, 0.11 mol) dissolved in dry Et2O (100 mL). Ethyl chloroformate … See more To a well-stirred solution of imidate (1 mmol) and a catalytic amount of acetic acid (1.7 μL) in Toluene (2 mL). Ethylenediamine (0.07 g, 1.2 mmoL) was added slowly. The reaction mixture was refluxed for 2 h. After … See more Viscous oil, yield: 89%. 1H-NMR (300 MHz, CDCl3) δ: 1.14 (s, 3H), 1.15 (s, 3H), 2.38 (sept, JH–H = 6 Hz, 1H), 3.39 (q, JH–H = 6 Hz, 2H); 3.70 (t, JH–H = 9 Hz, 2H). 13C NMR … See more " - Bisnucleophiles

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Bisnucleophiles

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