Results 171 to 180 of about 15,022,030 (297)

Choline chloride based deep eutectic solvents as extraction media for separation of n-hexane–ethanol mixture

, 2017
A. Samarov, M. Smirnov, M. Sokolova, E. Popova, A. Toikka   +4 more
semanticscholar   +1 more source

Photochemisch erzeugte Oxetane als Schlüssel zur endergonen Cyclopropansynthese

Angewandte Chemie, EarlyView.
Eine neuartige Oxetan‐zu‐Cyclopropan‐Umlagerung eröffnet einen atomökonomischen Zugang zu dicht funktionalisierten Cyclopropanen aus Furanen und photochemisch aktivierten Aldehyden. Die erhaltenen Strukturen erschließen komplexe bioaktive Motive und fungieren als vielseitige Plattform für die asymmetrische Cyclopropansynthese.
Tim Köglmeier, Thomas J. Tiefel, Oliver Reiser   +2 more
wiley   +1 more source

An original approach for lipophilic natural products extraction: Use of liquefied n-butane as alternative solvent to n-hexane

, 2017
Vincent Rapinel, Natacha Rombaut, Njara Rakotomanomana, Alain Vallageas, G. Cravotto, F. Chemat   +5 more
semanticscholar   +1 more source

Mechanistische Diversität in der photoangeregten Radikal‐Redoxchemie: Eine kritische Evaluierung

Angewandte Chemie, EarlyView.
Für viele prominente Beispiele der Photoredox‐Katalyse wird angenommen, dass sie über die Anregung einer offenschaligen („open‐shell“) Zwischenform des Katalysators ablaufen. Es wird jedoch intensiv darüber diskutiert, ob solche Mechanismen realistisch sind und, falls ja, wie genau sie ablaufen können.
Samuel J. Horsewill, Ryan Phelps, Joshua P. Barham, Daniel J. Scott   +3 more
wiley   +1 more source

Coasting effect of <i>n</i>-hexane-induced neuropathy evidenced by electroneuromyography and clinical symptom scales: a 12-month follow-up study. [PDF]

Arh Hig Rada Toksikol
Koçak Y, Kulu U, Çeker TD, Sümbül O, Aksoy D, Çevik B.   +5 more
europepmc   +1 more source

Heat‐ and Light‐Directed Cycloadditions Enable a Pericyclic Cascade Reaction From a Molecular Precursor

Angewandte Chemie, EarlyView.
A multi‐stimuli‐responsive material is designed that responds to light, heat, and mechanical force through distinct chemical reaction pathways. The pathway is directed by self‐assembly and the applied stimulus. A novel pericyclic reaction cascade is also achieved, and the mechanism is supported through density functional theory calculations.
Liulei Ma, Bella Albano, Gary C. George III, Steven A. Lopez, Kristin M. Hutchins   +4 more
wiley   +1 more source

Synergistic Interaction Effect of Artemisia cina n-hexane Extract and Tagetes lucida Ethyl Acetate Extract on Haemonchus Contortus. [PDF]

Acta Parasitol
Santiago-Figueroa I, González-Cortazar M, Estrada-Flores JG, Cuéllar-Ordaz JA, López-Arellano ME, González-Reyes FJ, Olmedo-Juárez A, Olmedo-Juárez A, Higuera-Piedrahita RI, Higuera-Piedrahita RI.   +9 more
europepmc   +1 more source

Ketal Protection of Glycerol for Selective Electrosynthesis of Glyceric Acid in Highly Alkaline Media

Angewandte Chemie, EarlyView.
Using a ketal‐protected glycerol derivative (solketal) as the oxidation substrate enables site‐selective electrooxidation that suppresses C–C cleavage on non‐noble catalysts. Highly alkaline conditions promote reactive solketal alkoxide formation, weaken the Cα─H bond to facilitate dehydrogenation, and buffer local acidification, enabling a record‐high
Jiamin Wang, Baokun Zhang, Kanglei Pang, Egon Campos dos Santos, Hong Liu, Mats Johnsson, Xiaowen Yu   +6 more
wiley   +1 more source

<i>Psidium guajava</i> Leaves n-Hexane Fraction Antibacterial Activity and the Inhibition of Gene Expression of <i>gtfB</i> and <i>gtfC</i> in the Combination <i>Streptococcus mutans</i> ATCC 25175 and <i>Veillonella parvula</i> ATCC 10790^T. [PDF]

J Exp Pharmacol
Setiawan AS, Subarnas A, Djais AA, Milanda T, Ichwan SJA.   +4 more
europepmc   +1 more source

Short Sb···Sb Contacts in Polymorphic Tris(p‐Tolyl)Antimony: A Hallmark of Organoantimony(III) Solid‐State Chemistry?

Angewandte Chemie, EarlyView.
Discovery of polymorphism in solid tris(p‐tolyl)antimony(III) highlighted short, direct antimony‐antimony contacts, with interatomic separation shorter than the sum of the van der Waals radii, and calculated interaction energy of ca. 26 kJ mol−1 that includes a significant dispersion component.
Imogen Suh, Michael Ferguson, Filip Topić, Fu‐Qiang Gong, Mihails Arhangelskis, Hatem M. Titi, D. Scott Bohle, Vinko Nemec, Levente Kiss, Andrew J. Morris, Cristian Silvestru, Dominik Cinčić, Tomislav Friščić   +12 more
wiley   +1 more source