Results 31 to 40 of about 153,294 (307)

Stereoretentive Decarboxylative C-3 Func-tionalization of Chromone-3-carboxylic Acids via Visible Light Irradiation

open access: yes, 2023
: Herein, we report a stereoretentive and decar-boxylative C-3 functionalization of chromone-3-carboxylic acids with optically active aziridines via visible light irradia-tion.
Ewelina, Kowalska   +4 more
core   +1 more source

Carboxylic Acids as Corrosion Inhibitors for Cu, Zn and Brasses in Simulated Urban Rain

open access: yesInternational Journal of Electrochemical Science, 2014
Carboxylic acids (hexanoic, decanoic, myristic and stearic) were studied as corrosion inhibitors for Cu, Zn, Cu10Zn and Cu40Zn in simulated urban rain, using electrochemical measurements.
Gregor Zerjav, Ingrid Milosev
doaj   +1 more source

Geometry and conformation of benzenecarboxylic acids [PDF]

open access: yesJournal of the Serbian Chemical Society, 2004
The geometry, conformations and energy of mono-, di-, and tri-carboxylic derivatives of benzene were studied by means of the AM1 molecular-orbital method.
Marković Zoran   +2 more
doaj   +1 more source

Synthesis and Characterization of Some New Coumarin Derivatives as Probable Breast Anticancer MCF-7 Drugs

open access: yesCrystals, 2021
This study aimed to synthesize quinolinone derivatives and investigate their cytotoxic activity. The compound 1-azacoumarin-3-carboxylic acid (2-oxo-1H-quinoline-3-carboxylic acid) was obtained via the cyclocondensation of 2-hydroxybenzaldehyde with ...
Ahmed Gaber   +5 more
doaj   +1 more source

Valorization of Lignin by Partial Wet Oxidation Using Sustainable Heteropoly Acid Catalysts

open access: yesMolecules, 2017
The production of carboxylic acids by partial wet oxidation of alkali lignin at elevated temperatures and pressures was studied experimentally. Two different heteropoly acids, phosphotungstic acid (H3PW12O40) and phosphomolybdic acid (H3PMo12O40), were ...
Abayneh Getachew Demesa   +3 more
doaj   +1 more source

Stable D-xylose ditriflate in divergent syntheses of dihydroxy prolines, pyrrolidines, tetrahydrofuran-2-carboxylic acids, and cyclic sugar -amino acids

open access: yes, 2022
Double nucleophilic displacement of a sugar D-xylose ditriflate derived from diacetone-D-glucose by amines, water and alkyl cyanoacetates gave a series of bicyclic divergent intermediates for the synthesis of a wide range of highly functionalized targets,
Soufian, El Ayadi   +8 more
core   +1 more source

SHORT-CHAIN CARBOXYLIC-ACIDS, A NEW CLASS OF TERATOGENS - STUDIES OF POTENTIAL BIOCHEMICAL-MECHANISMS

open access: yes, 1986
Certain short-chain carboxylic acids (SCCA) appear to share a common teratogenic potential, although the structural requirements for activity remain obscure.
Coakley, ME   +5 more
core   +1 more source

Investigating the partitioning of anionic carboxylic acids through data analysis and experimental procedures

open access: yes, 2023
Di Toro, Dominic M.Polyfluoroalkyl Substances, known as PFAS, are a class of manufactured surfactants. Since the toxicity of the anionic forms of these compounds are difficult to study, carboxylic acids can be used as surrogate compounds.
Johnston, Lindsay
core   +1 more source

Understanding biocatalyst inhibition by carboxylic acids

open access: yesFrontiers in Microbiology, 2013
Carboxylic acids are an attractive biorenewable chemical in terms of their flexibility and usage as precursors for a variety of industrial chemicals.
Laura R Jarboe   +3 more
doaj   +1 more source

Copper-Catalyzed Decarboxylative Elimination of Carboxylic Acids to Styrenes

open access: yes, 2023
A copper-catalyzed decarboxylative elimination reaction of (hetero)aromatic propionic acids to vinyl (hetero)arenes has been developed. This method furnishes alkenes from carboxylic acids without the need for stochiometric Pb or Ag additives or expensive
Michael, Stanton   +5 more
core   +1 more source

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