Results 11 to 20 of about 12,722 (248)

Three-component reaction between isatoic anhydride, amine and methyl-substituted furylacrylaldehydes: crystal structures of 3-benzyl-2-[(E)-2-(5-methylfuran-2-yl)vinyl]-2,3-dihydroquinazolin-4(1H)-one, 3-benzyl-2-[(E)-2-(furan-2-yl)-1-methylvinyl]-2,3-dihydroquinazolin-4(1H)-one and 3-(furan-2-ylmethyl)-2-[(E)-2-(furan-2-yl)-1-methylvinyl]-2,3-dihydroquinazolin-4(1H)-one

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2018
Compounds (I), C22H20N2O2, (II), C22H20N2O2 and (III), C20H18N2O3 are the products of three-component reactions between isatoic anhydride, the corresponding amine and 3-(5-methylfuran-2-yl)- or (furan-2-yl)-2-methylacrylaldehyde.
Vladimir P. Zaytsev   +6 more
doaj   +1 more source

Dioxins and furans in fly ashes from an incinerator

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2004
The amount of dioxins and furans in fly ashes from a medical waste incinerator was determined following the US EPA 8280A protocol. Dioxin emissions in both particulate matter and exit gas stream from the incinerator’s chimney were estimated. Furthermore,
Marta Isabel Cobo   +3 more
doaj   +1 more source

Constraints on the Role of Laplace Pressure in Multiphase Reactions and Viscosity of Organic Aerosols

open access: yesGeophysical Research Letters, 2022
Aerosol chemistry has broad relevance for climate and global public health. The role of interfacial phenomena in condensed‐phase aerosol reactions remains poorly understood.
Sarah S. Petters
doaj   +1 more source

Synthesis and Anti-Tuberculosis Activity of Substituted 3,4-(dicoumarin-3-yl)-2,5-diphenyl Furans and Pyrroles

open access: yesEngineering Proceedings, 2022
Increasing rates of multi-drug resistant (MDR) and extremely-drug resistant (XDR) cases of tuberculosis (TB) strains are alarming, and eventually hampered an effective control of the pathogenic disease. In the present study, nine derivatives of 2,3-bis(2-
Bhagwat Jadhav   +2 more
doaj   +1 more source

Furan

open access: yes, 2018
Compostos orgànics; Tractament dels aliments amb calor; Protecció de la salut Compuestos orgánicos; Tratamiento de los alimentos con calor; Protección de la salud Organic compounds; Treatment of foods with heat; Health protection El furà és un compost orgànic que es forma durant el tractament dels aliments amb calor intensa. El furà i metilfurans poden
  +8 more sources

Frequency of Persistent Organic Pollutants in Serum Samples of Electronics Workers in Sharkia Governorate, Egypt

open access: yesEgyptian Society of Clinical Toxicology Journal, 2023
Background: Persistent Organic Pollutants (POPs) are toxic chemicals that persist in the environment, bioaccumulate in living organisms and pose a threat to human health and the environment.
Hebatalla Aly   +4 more
doaj   +1 more source

Recent Trends in the Production, Combustion and Modeling of Furan-Based Fuels

open access: yesEnergies, 2018
There is growing interest in the use of furans, a class of alternative fuels derived from biomass, as transportation fuels. This paper reviews recent progress in the characterization of its combustion properties.
Mazen A. Eldeeb, Benjamin Akih-Kumgeh
doaj   +1 more source

Synthesis of 3-Aryl-3-(Furan-2-yl)Propanoic Acid Derivatives, and Study of Their Antimicrobial Activity

open access: yesMolecules, 2022
Reactions of 3-(furan-2-yl)propenoic acids and their esters with arenes in Brønsted superacid TfOH affords products of hydroarylation of the carbon–carbon double bond, 3-aryl-3-(furan-2-yl)propenoic acid derivatives. According to NMR and DFT studies, the
Mikhail V. Kalyaev   +10 more
doaj   +1 more source

SYNTHESYS OF A FUNCTIONALIZED TETRAHYDROFURAN FRAGMENT THROUGH BROMINATION-CYCLIZATION OF A CONJUGATED DIENE [PDF]

open access: yesChemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2010
Conjugate 1,4-addition of N-bromosuccinimide (NBS) to a diene system, possessing a suitable oxygen functionality, leads to functionalized tetrahydrofuran derivatives, which can be further derivatized into different synthetic targets.
Veaceslav Kulciţki   +4 more
doaj  

Palladacarboxamide Capping Reagents for Carbon Isotope Labeling and Pharmaceutical Diversification

open access: yesAngewandte Chemie, EarlyView.
Herein, we present a method for carbon isotope labeling of arylamides via the coupling of air‐stable palladium carboxamide complexes and boronic ester/acids. A wide variety of functionalized boronic esters and acids have been coupled with simple palladium carboxamides complexes.
Daniel V. Hoffmann   +8 more
wiley   +2 more sources

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