Results 31 to 40 of about 55,888 (222)
Total Synthesis of Resveratrone and iso‐Resveratrone
ChemistryOpen, 2022 The first total synthesis of resveratrone and iso‐resveratrone based on an epoxide olefination approach is described. The pivotal reaction proceeds by insertion of the lithiated epoxide into a boronic ester and subsequent syn‐elimination.
Stefan Fritsch +5 more
doaj +1 more source
2,6-exo-8,10-exo-4-Butyl-9-oxa-4-azatetracyclo[5.3.1.02,6.08,10]undecane-3,5-dione
Molbank, 2022 The title epoxide was obtained by spontaneous epoxidation of the corresponding unsaturated imide in air or by peracid oxidation. Unambiguous assignment of the 1H- and 13C-NMR spectra is achieved by comparison between analogous compounds and its X-ray ...
R. Alan Aitken +2 more
doaj +1 more source
CF3-Bis-TEMPO-Vis: New Visible Light Active Bis-Benzimidazolequinone Alkoxyamine
Molbank, 2021 Alkoxyamines of TEMPO usually dissociate thermally at >100 °C; however, room temperature homolysis, activated by visible light, occurs with benzimidazolequinone derivatives.
Patrick Kielty +3 more
doaj +1 more source
Insights into the function of silver as an oxidation catalyst by ab initio, atomistic thermodynamics [PDF]
Phys. Rev. B 68, 165412 (2003), 2003 To help understand the high activity of silver as an oxidation catalyst, e.g., for the oxidation of ethylene to epoxide and the dehydrogenation of methanol to formaldehyde, the interaction and stability of oxygen species at the Ag(111) surface has been studied for a wide range of coverages.
arxiv +1 more source
Beilstein Journal of Organic Chemistry, 2015 Two new one-component aluminium-based catalysts for the reaction between epoxides and carbon dioxide have been prepared. The catalysts are composed of aluminium–salen chloride complexes with trialkylammonium groups directly attached to the aromatic rings
Yuri A. Rulev +4 more
doaj +1 more source
Recent Developments in Stereoselective Reactions of Sulfonium Ylides
Organics, 2022 This review describes advances in the literature since the mid-1990s in the area of reactions of sulfonium ylide chemistry, with particular attention paid to stereoselective examples.
Mukulesh Mondal +4 more
doaj +1 more source
The stability of 3 transmembrane and 4 transmembrane human vitamin K epoxide reductase models [PDF]
, 2016 3 transmembrane and 4 transmembrane helices models are suggested for the human vitamin K epoxide reductase (VKOR). In this study, we investigate the stability of the human 3 transmembrane/4 transmembrane VKOR models employing a coarse-grained normal mode analysis and molecular dynamics simulation.
arxiv +1 more source
Why is a noble metal catalytically active? The role of the O-Ag interaction in the function of silver as an oxidation catalyst [PDF]
Phys. Rev. Lett. 90, 256102 (2003), 2003 Extensive density-functional theory calculations, and taking into account temperature and pressure, affords a comprehensive picture of the behavior and interaction of oxygen and Ag(111), and provides valuable insight into the function of silver as an oxidation catalyst.
arxiv +1 more source
Catalytic Annulation of Epoxides with Heterocumulenes by the Indium-Tin System
Molecules, 2018 In the synthesis of five-membered heterocycles by the annulation of epoxides with heterocumulenes such as carbon dioxide and isocyanates, we developed the indium-tin catalytic system and synthesized various cyclic adducts including novel types products ...
Itaru Suzuki +3 more
doaj +1 more source
Epoxides and Soluble Epoxide Hydrolase in Cardiovascular Physiology [PDF]
Physiological Reviews, 2012 Epoxyeicosatrienoic acids (EETs) are arachidonic acid metabolites that importantly contribute to vascular and cardiac physiology. The contribution of EETs to vascular and cardiac function is further influenced by soluble epoxide hydrolase (sEH) that degrades EETs to diols. Vascular actions of EETs include dilation and angiogenesis.
openaire +3 more sources