Results 81 to 90 of about 4,019 (241)

Skeletal Editing of Dibenzolactones to Fluorenes via Ni- or Pd-Catalyzed Decarboxylation

, 2023
The skeletal editing of dibenzolactones to fluorenes by Ni- or Pd-catalyzed decarboxylation is reported. In contrast to previously reported intramolecular decarboxylative couplings, inductively electron-withdrawing ortho substituents on the aryl ...
Liang-Yu Chen (792990), Junqi Li (1280016), Liang-Yu Chen, Junqi Li   +3 more
core   +1 more source

Characteristics of fuel oil obtained from oil of the Krapivinskoe oilfield (report 2)

Известия Томского политехнического университета: Инжиниринг георесурсов
Relevance. The need to obtain new data on the pattern of thermal transformations of resin, asphaltene and oil components of the fuel oil subjected to thermal or thermocatalytical treatment.
Tatiana V. Cheshkova, Татyana А. Sagachenko, Elena Yu. Kovalenko, Alexandra S. Vishnevich, Evgeniya B. Golushkova, Raisa S. Min   +5 more
doaj   +1 more source

The Preparation of Novel Fluorenes Inspired by Hipposudoric Acid

Helvetica Chimica Acta, EarlyView.
In this research we report on the design and synthesis of a series of fluorene‐based derivatives loosely inspired by the tricyclic framework of hipposudoric acid. Preparation of sixteen novel N‐alkylated derivatives was accomplished via a series of concise one‐step amide N‐alkylation reactions.
Munib Uddin, Freya Harrison, Florida Koçi, Stephen P. Wren   +3 more
wiley   +1 more source

Formation of (Aza)fulvenallene, Cyanocyclopentadiene, and (Aza)fluorenes in the Thermal Rearrangements of Indazoles, Azaindazoles, and Homoquinolinic Anhydride

, 2023
Flash vacuum pyrolysis (FVP) of pyrazoles and indazoles constitutes a valuable route to carbenes and nitrenes. In this study, we employed M062X and CCSD(T) calculations to provide a mechanistic rationale for the formation of fulvenallene and fluorenes ...
M. Saeed Mirzaei (10912006), Curt Wentrup (1433587)   +1 more
core   +1 more source

Geochemical characteristics and significance of aromatic hydrocarbons in the Upper Carboniferous mud shales from the Ermahu Sag, Wuwei Basin

Open Geosciences
The Carboniferous is a potential oil-bearing layer in Wuwei Basin, west China. The research on the related parameters of source rocks is relatively weak, which directly restricts the oil-gas exploration in the basin.
Liu Hongjun, Ma Kun, Ma Ge, Lin Yanhua, Zhang Yunbo   +4 more
doaj   +1 more source

Bisphenol M Induces Dose‐Dependent Hepatic Injury and Fibrotic Remodeling in Female Mice

Journal of Applied Toxicology, EarlyView.
ABSTRACT The safety of bisphenol analogs as alternatives to bisphenol A (BPA) is increasingly concerning. This study investigated the hepatotoxic effects of bisphenol M (BPM), a widely used BPA substitute, in 6‐week‐old female BALB/c mice exposed to 2.5, 5, and 10 mg/kg/day intraperitoneally for 14 days. Hepatic changes were assessed via histopathology,
Muhammed Canik, Asuman Deveci Ozkan, Tuğba Kotil, Nazan Deniz Yön   +3 more
wiley   +1 more source

Hydrogenation of 9-pyridylmethylene- and 9-benzylidene(aza)fluorenes in the presence of rhenium heptasulfide

, 2020
Hydrogenation of 9-pyridylmethylene(aza)fluorenes and 9-benzylidene-4-azafluorene at 250°C and pH2 = 130 atm in the presence of Re2S7 as a catalyst occurs preferably at the exocyclic double bond of the fulvene fragment to yield pyridyl-9-(aza ...
Kolyadina N.M., Ryashentseva M.A., Prostakov N.S., Soldatenkov A.T.   +3 more
core  

Electrospun conducting polymers: recent trends and the transition towards a sustainable future

Polymer International, EarlyView.
This review discusses the electrospinning of conducting polymers, detailing procedures, fibrous morphologies, improved properties, applications in electronics, and challenges, while outlining future directions for nanofibre‐based devices in various fields.
Xenofon Karagiorgis, Sofia Sandhu, Peter J. Skabara, Ravinder Dahiya   +3 more
wiley   +1 more source

Highly fluorescent intramolecular dimmers of two pyrenyl-substituted fluorenes bridged by 1,6-hexanyl : synthesis, spectroscopic, and self-organized properties

, 2010
Highly fluorescent intramolecular dimmers of two pyrenyl-substituted fluorenes bridged by 1,6-hexanyl : synthesis, spectroscopic, and self-organized ...
Q He (7930655), C Deng (13290345), Tong Lin (13098042), J Cheng (7939862), C He (7754612), L Shi (66606), H Cao (5161103)   +6 more
core  

Polar Fluorenes and Spirobifluorenes: Fluorescence and Fluorescence Anisotropy Spectra

, 2016
An extensive spectroscopic study is presented of two asymmetrically substituted fluorene dyes and of the related spiro dimers in both liquid and glassy solvents.
Simonetta Orlandi (1909690), Fabio Rizzo (2042695), Luca Grisanti (1603723), Marco Cavazzini (1909696), Francesca Terenziani (2089582), Anna Painelli (1299129), Cristina Sissa (1934548)   +6 more
core   +1 more source