Results 31 to 40 of about 21,056 (199)
AMB Express, 2020 Trametes spec. laccase (EC 1.10.3.2.) mediates the oxidative coupling of 6-aminopenicillanic, 7-aminocephalosporanic, and 7-aminodesacetoxycephalosporanic acid with 2,5-dihydroxybenzoic acid derivatives to form new penicillin and cephalosporin structures,
Annett Mikolasch +3 more
doaj +1 more source
Xishaeleganins A–D, Sesquiterpenoid Hydroquinones from Xisha Marine Sponge Dactylospongia elegans
Marine Drugs, 2022 Four new sesquiterpene hydroquinones, xishaeleganins A–D (6–9), along with eleven known related ones (12 and 14–23) were isolated from the Xisha marine sponge Dactylospongia elegans (family Thorectida).
Bao Chen +5 more
doaj +1 more source
Electron Donor–Acceptor Complex Catalysis in Synthetic Chemistry
Angewandte Chemie, EarlyView.Electron donor–acceptor (EDA) complexes are moving beyond stoichiometric photoactivation toward catalytic platforms for radical generation. Productive EDA catalysis requires coordinated donor–acceptor association, charge‐transfer excitation, radical reactivity, and vcatalyst turnover.
Tristan von Münchow +3 more
wiley +2 more sources
Heck- and Suzuki-coupling approaches to novel hydroquinone inhibitors of calcium ATPase
Beilstein Journal of Organic Chemistry, 2019 In this study, we explored Heck- and Suzuki-coupling methodology to modify the template 2,5-di-tert-butylhydroquinone (BHQ, 2), an inhibitor of the enzyme sarco/endoplasmic reticulum calcium ATPase (SERCA).
Robert J. Kempton +3 more
doaj +1 more source
Electrophilic Catalysis in Iodosylbenzene Oxidation of Aromatic Derivatives
CHIMIA, 1986 The oxidation of activated aromatic compounds (phenols and hydroquinones) is catalyzed by BF3 or RuCl2(PPh3)3. The catalytic effect of the ruthenium is ascribed to electrophilic catalysis, due to complexation between iodosylbenzene and the Ru species ...
Paul Müller, David Manuel Gilabert
doaj +1 more source
Oxidation of hydroquinones by a nonheme iron(IV)-oxo species
, 2017 The reactivity of an isolated, well-characterized nonheme iron(IV)-oxo complex, [(TMC)FeIV{double bond, long}O]2+ (TMC = 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane), has been examined in the oxidation of hydroquinones.
김진흥, 남원우
core +1 more source
Preparation of Substituted Hydroquinones and Benzofurans from 1,4-Quinone Monoketals
, 2006 International audienceAn easy procedure for the preparation of 2-substituted hydroquinones, by addition of organolithium or organomagnesium compounds to 1,4-quinone monoketals followed by acid-catalyzed dienone-phenol type rearrangement, is described ...
Salom-Roig, Xavier +5 more
core +1 more source
NMR assignment in regioisomeric hydroquinones [PDF]
, 2011 A set of regioisomeric pairs of tricyclic hydroquinones, analogues of antitumor 9,10-dihydroxy-4,4-dimethyl-5,8-dihydroanthracen-1(4H)-one (1) and other derivatives, were synthesized and their regiochemistry and NMR spectra assigned by using 1H-detected ...
Henar Martínez-García +21 more
core +1 more source
Recent Advances in Light‐Addressable Electrochemistry for Spatially Resolved Applications
Advanced Materials Technologies, EarlyView.This comprehensive review highlights light‐addressable electrochemistry as a powerful tool that uses light to control localized chemical reactions on unstructured semiconductor surfaces. The work evaluates advanced strategies to optimize electrode materials for enhanced spatial resolution and stability. Furthermore, it showcases diverse applications in
Nhi Trang Vo +2 more
wiley +1 more source
Advanced Intelligent Discovery, EarlyView.A machine learning framework simultaneously predicts four critical properties of monomers for emulsion polymerization: propagation rate constant, reactivity ratios, glass transition temperature, and water solubility. These tools can be used to systematically identify viable bio‐based monomer pairs as replacements for conventional formulations, with ...
Kiarash Farajzadehahary +1 more
wiley +1 more source