Results 21 to 30 of about 333,250 (353)
Cobalt-catalyzed highly enantioselective hydrogenation of α,β-unsaturated carboxylic acids
Nature Communications, 2020 A large number of marketed drugs contains a chiral carboxylic acid scaffold. Here, the authors report the asymmetric hydrogenation of α,β-unsaturated carboxylic acids to α-chiral carboxylic acids using a cobalt catalyst bearing an electron-donating ...
Xiaoyong Du +8 more
doaj +1 more source
Corrosion protection of AA2024 sealed anodic layers using the hydrophobic properties of carboxylic acids [PDF]
, 2009 The present study investigates the use of carboxylic acids as a post-treatment for sealed AA2024 anodised in tartaric–sulphuric acid electrolyte. Four monocarboxylic acids with different carbon chain lengths were tested ((CH3–(CH2)n–COOH with n=4, 8, 12 ...
Boisier, Grégory +4 more
core +2 more sources
Applied Sciences, 2022 An intercomparison study was conducted to evaluate the contributions of carboxylic acids to m/z 44 (COO+) signals obtained by an on-line aerosol mass spectrometer (AMS) during a field campaign at Cape Hedo, Okinawa, in the western North Pacific Rim.
Bhagawati Kunwar +4 more
doaj +1 more source
Carboxylic-acid-passivated metal oxide nanocrystals : ligand exchange characteristics of a new binding motif [PDF]
, 2015 Ligand exchange is central in the processing of inorganic nanocrystals (NCs) and requires understanding of surface chemistry. Studying sterically stabilized HfO2 and ZrO2 NCs using H-1 solution NMR and IR spectroscopy as well as elemental analysis, this ...
Anderson +21 more
core +1 more source
Efficient and Mild Microwave-Assisted Stepwise Functionalization of Naphthalenediimide with α-Amino Acids [PDF]
, 2006 Microwave dielectric heating proved to be an efficient method for the one-pot and stepwise syntheses of symmetrical and unsymmetrical naphthalenediimide derivatives of α-amino acids.
Otto, Sijbren, +3 more
core +4 more sources
Study of the effect of microwave-ray on some carboxylic acids containing hydroxyl group at α – carbon [PDF]
مجلة التربية والعلم, 1999 : The effect of Microwave-ray was studied on the three mono carboxylic acids contains hydroxyl group (OH) at α – carbon in the solid state at different times. these carboxylic acids are Glycolic acid, Mandilic acid, Benzilic acid.
Ahmed Sadoon
doaj +1 more source
, 2014 Citation: 'carboxylic acids' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.C00852 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
Robert J. Ouellette, J. David Rawn
+4 more sources
Frontiers in Environmental Science, 2019 Innovative, low-cost methods for inactivating pathogens in human fecal material (HFM) are needed, particularly in expanding urban areas where conventional sewer systems and centralized wastewater treatment plants are not feasible.
Lauren A. Harroff +5 more
doaj +1 more source
Chimica Techno Acta, 2021 The synthesis of new derivatives of 2-[(1,4-dioxo-1-amino-4-arylbutyl-2-en-2-yl)amino]-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylic acid is described.
Alena I. Siutkina +2 more
doaj +1 more source
An enhanced procedure for measuring organic acids and methyl esters in PM2.5 [PDF]
Atmospheric Measurement Techniques, 2015 A solid-phase extraction (SPE) pretreatment procedure allowing organic acids to be separated from methyl esters in fine aerosol has been developed. The procedure first separates the organic acids from fatty acid methyl esters (FAMEs) and other nonacid ...
F. Liu +5 more
doaj +1 more source