Results 11 to 20 of about 262,165 (220)
Regioselective Pummerer rearrangement in [2.2]paracyclophanes
Phosphorus, Sulfur, and Silicon and the Related Elements, 2020 We investigated and rationalized a synthetic pathway to [2.2]paracyclophanedienes, that exploits the combination of the Pummerer rearrangement on a dithiacyclophane with a photochemical sulfur extrusion step and a base-catalyzed elimination step. The synthetic pathway is very effective for the symmetric, prototypical [2.2]paracyclophanediene.
Invernizzi F., Nitti A., Pasini D.
openaire +4 more sources
Photochemical Hydrothiolation of Amorphadiene and Formal Synthesis of Artemisinin via a Pummerer Rearrangement [PDF]
Organic Letters, 2021 A new access to artemisinin is reported based on a selective photochemical hydrothiolation of amorphadiene, a waste product of the industrial semisynthetic route.
Mario Andrés Gómez Fernández +5 more
semanticscholar +4 more sources
Chinese journal of chemistry, 2023 C-aryl glycosides are an important kind of carbohydrate derivatives for drug discovery, due to their distinctive attributes of resistance to hydrolysis from enzymes.
Jiagen Li, Xuefeng Jiang
semanticscholar +3 more sources
European Journal of Organic Chemistry, Volume 28, Issue 26, July 12, 2025.Two series of novel six‐membered Se‐glycoconjugates containing hydroxycinnamic acids marked by well‐known antioxidant properties are synthesized, exploiting a Mitsunobu reaction and a Pummerer‐like rearrangement. A first example of six‐membered selenosugar with selenium in the ring and bearing an acetal‐like functional group at C‐1 was reported, which ...
Claudia González +6 more
wiley +2 more sources
Pummerer fragmentation vs. Pummerer rearrangement: a mechanistic analysis
Chemical Communications, 2006 Depending upon the nature of the substituent at the beta-position of the sulfoxide moiety, a Pummerer reaction can be oriented "at will" towards Calpha-H (rearrangement) or Calpha-Cbeta (fragmentation) bond cleavage.
Laleu, Benoît +2 more
openaire +5 more sources
Dual vicinal functionalisation of heterocycles via an interrupted Pummerer coupling/[3,3]-sigmatropic rearrangement cascade. [PDF]
Chem Sci, 2018 Šiaučiulis M +3 more
europepmc +3 more sources
, 1976 Pyrimido-(1, 4)-benzothiazinedione (I) underwent oxidative coupling with water, alcohols and morpholine at the 4α-angular position in the presence of iodine and base such as triethylamine or morpholine.
Yoshifumi Maki, T. HIRAMITSU
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Regioselective Difunctionalization of 2,6-Difluorophenols Triggered by Sigmatropic Dearomatization [PDF]
, 2020 Regioselective difunctionalization of 2, 6-difluorophenols with aryl sulfoxides and nucleophiles has been accomplished. The reaction is composed of (1) Pummerer-based [3, 3] sigmatropic dearomatization to generate 2, 4-cyclohexadienone, (2) Michael ...
Nogi, Keisuke +2 more
core +1 more source
Aroyl‐S,N‐Ketene Acetals: Luminous Renaissance of a Class of Heterocyclic Compounds
Chemistry – A European Journal, Volume 29, Issue 64, November 16, 2023., 2023 Aroyl‐S,N‐ketene acetals have experienced a renaissance from a synthetic heterocyclic peculiarity as a short dipole with strong push‐pull characteristics to a promising class of dyes with pronounced controllable and tunable solid‐state and aggregation‐induced emission properties, thus allowing for a methodical and synthetical extension of the system ...
Lukas Biesen, Thomas J. J. Müller
wiley +1 more source