Results 91 to 100 of about 3,549 (288)

Microwave-Assisted Regioselective Cycloaddition Reactions between 9-Substituted Anthracenes and Levoglucosenone

, 2016
The cycloaddition reactions of 9-substituted anthracenes and levoglucosenone were investigated under microwave irradiation and conventional heating conditions. Considering time, yields, and regioselectivity, microwave technology has proven to be an ideal
Ariel M. Sarotti (1366479), Alejandra G. Suárez (2518720), Madeleine M. Joullié (2439190), Rolando A. Spanevello (1554910)   +3 more
core   +1 more source

at the frontier of glycobiology and integrative medicine: Health implications of an ancient plant

SAGE Open Medicine, 2019
Aloe vera plant extracts are ubiquitous in foods, cosmetics, and medicine. Like all plants, these extracts contain an array of potential bioactives or glycans, which may contribute to health when applied or consumed.
Peter Pressman, Roger Clemens, A Wallace Hayes   +2 more
doaj   +1 more source

Ceric ammonium nitrate and manganese(III) acetate mediated radical oxidation and addition reactions of anthracene and 9-substituted anthracenes

Macedonian Journal of Chemistry and Chemical Engineering, 2012
Radical oxidation and addition reactions of anthracene (1), 9-methylanthracene (2) and 9-phenylanthracene (3) were investigated with dimethyl malonate (4) in the presence of ceric ammonium nitrate (CAN) and manganese(III) acetate (Mn(OAc)3).
Mustafa Zengin, Faith Sonmez, Mustafa Arslan, Mustafa Kucukislamoglu   +3 more
doaj   +1 more source

Ein chirales, sattelförmiges Nanographen mit zwei Heptagon‐integrierten [4]Helicenen

Angewandte Chemie, EarlyView.
Wir präsentieren eine neuartige Synthesestrategie für ein chirales, sattelförmiges Nanographen (cSNG) über eine zweistufige Oxidation eines prochiralen Anthracen‐Vorläufers. Die Scholl‐Oxidation liefert zunächst ein Schlüsselzwischenprodukt mit sp3‐defekten Heptagonen, die anschließende oxidative Dehydrierung ergibt das vollständig konjugierte cSNG ...
Felix Trautner, Boris Borrisov, Philipp Royla, Hongqing Zhao, Hartmut Komber, Li Wan, Evgenia Dmitrieva, Ji Ma, Jan J. Weigand, Qun Yang, Xinliang Feng, Wenhui Niu   +11 more
wiley   +1 more source

Boosting Triplet‐Triplet Annihilation Upconversion in OLEDs via Substituent Control in Dicarbazolyl Anthracenes

Advanced Electronic Materials
The aim of this work is the exploration of the impact of the methoxy‐, methoxyethoxy‐ and tert‐butyl functional groups on the structure‐property relationships of the derivatives of anthracene and carbazole exhibiting triplet‐triplet annihilation (TTA ...
Pavel Arsenyan, Alla Petrenko, Audrius Bucinskas, Ehsan Ullah Rashid, Kuan‐Wei Chen, Jiun‐Haw Lee, Tien‐Lung Chiu, Oleksandr Bezvikonnyi, Dmytro Volyniuk, Sergey Belyakov, Juozas V. Grazulevicius   +10 more
doaj   +1 more source

Diatom aggregation when exposed to crude oil and chemical dispersant: Potential impacts of ocean acidification.

PLoS ONE, 2020
Diatoms play a key role in the marine carbon cycle with their high primary productivity and release of exudates such as extracellular polymeric substances (EPS) and transparent exopolymeric particles (TEP). These exudates contribute to aggregates (marine
Jennifer L Genzer, Manoj Kamalanathan, Laura Bretherton, Jessica Hillhouse, Chen Xu, Peter H Santschi, Antonietta Quigg   +6 more
doaj   +1 more source

Synthesis of Cycloprop[b]anthracenes via Trapping of o-Naphthoquinodimethane

, 1983
Cycloprop[b]anthracenes 1, 1a, 1b are prepared in a 3-step synthesis starting from o-di(iodomethyl)benzene. The key step consists of trapping of o-naphthoquinodimethane (9) with 1,2-di- and tetrahalogenocyclopropenes (3, 3a, 4b).
Muller, Paul, Rodriguez, Domingo
core   +1 more source

Ein reversibler 900‐nm‐Nahinfrarot‐Photoschalter für unsichtbar lichtbeschreibbare 2D‐ und 3D‐Displays

Angewandte Chemie, EarlyView.
Der peri‐benzo[a]fluoranthenthioindigo (PBFT) Photoschalter kann direkt durch Nahinfrarot‐Licht mit Wellenlängen bis zu 900 nm angeregt werden. Er bietet ein hochperformantes Eigenschaftsprofil mit kontrastreichen Farbänderungen zwischen blassgrün und tiefblau.
Elias Ciekalski, Henry Dube
wiley   +1 more source

Infrared and ultraviolet spectrophotometric analysis of chromatographic fractions of crude oils and petroleum products

Bulletin of the Chemical Society of Ethiopia, 2007
Samples of light, medium and heavy Nigerian crude oils and petroleum products including diesel oil, engine oil (SAE 40) and gasoline (PMS) have been separated into four fractions of saturates, monoaromatics, diaromatics and polyaromatics by elution ...
E.O. Odebunmi, S.A. Adeniyi
doaj  

Fast and ultrafast photoinduced decay processes of ethynyl-fluorene and ethynyl-anthracenes

, 2011
Fast and ultrafast photoinduced decay processes of ethynyl-fluorenes and ethynyl-anthracenes are ...
MARROCCHI, Assunta, CARLOTTI, BENEDETTA, SPALLETTI, Anna, FLAMINI, REBECCA, ELISEI, Fausto   +4 more
core