Results 11 to 20 of about 5,409,859 (340)

Nickel-Catalyzed Decarbonylative Amination of Carboxylic Acid Esters.

open access: yesJournal of the American Chemical Society, 2020
The reaction of carboxylic acid derivatives with amines to form amide bonds has been the most widely used transformation in organic synthesis over the past century.
Christian A. Malapit   +4 more
semanticscholar   +1 more source

NMR spectroscopy of Cu(II) complexes with acrylamide and sodium acrylate copolymer and ω-amino acids

open access: yesЖурнал Белорусского государственного университета: Химия, 2021
Macromolecular complexes of acrylamide and sodium acrylate copolymer with microelements, including Cu(II), may form at preparation of crop protection and stimulation compositions, where the copolymer serves as an adhesive, water-retaining and film ...
Dmitry L. Kudryavsky   +4 more
doaj   +1 more source

Acid-base strengths in 1,2-dichloroethane [PDF]

open access: yes, 1973
The pKa value of hydriodic acid in 1,2-dichloroethane was determined from conductivity measurements. A glass electrode was calibrated for dichloroethane in the potentiometric titration of hydriodic acid with tetramethylguanidine.
Bos, M., Dahmen, E.A.M.F.
core   +9 more sources

Carboxylic acids and light interact to affect nanoceria stability and dissolution in acidic aqueous environments

open access: yesBeilstein Journal of Nanotechnology, 2023
Cerium atoms on the surfaces of nanoceria (i.e., cerium oxide in the form of nanoparticles) can store or release oxygen, cycling between Ce3+ and Ce4+; therefore, they can cause or relieve oxidative stress within living systems.
Matthew L. Hancock   +2 more
doaj   +1 more source

Using pyrimidinecarboxylic acids as growth stimulants for Rhododendron ledebourii Pojark and Rhododendron smirnowii Trautv.

open access: yesActa Agriculturae Slovenica, 2023
Synthesised organic compounds of pyrimidinecarboxylic acids are characterised by high biological activity, even when their concentrations are low. These compounds, when applied to the seeds of Rhododendron, a genus of woody plants, with concentrations of
Tatiana V. VOSTRIKOVA   +3 more
doaj   +1 more source

Carboxylic Acid Production

open access: yesFermentation, 2017
Carboxylic acids are central compounds in cellular metabolism, and in the carbon cycle in nature.[...]
Gunnar Lidén
doaj   +1 more source

Oligomerization of Indole Derivatives with Incorporation of Thiols

open access: yesMolecules, 2008
: Two molecules of indole derivative, e.g. indole-5-carboxylic acid, reacted with one molecule of thiol, e.g. 1,2-ethanedithiol, in the presence of trifluoroacetic acid to yield adducts such as 3-[2-(2-amino-5-carboxyphenyl)-1-(2-mercaptoethylthio)ethyl]-
Jarl E.S. Wikberg   +6 more
doaj   +1 more source

Synthesis of highly alkylated functionalized cyclopentadienes [PDF]

open access: yes, 1988
Tetra- and pentaalkylated cyclopentadienyl ketones and carboxylic acids are prepared by electrophilic allylation of enolizible 1,3-dicarbonyl compounds and successive acid catalyzed ...
Koschinsky, Rainer   +2 more
core   +1 more source

A Dual Stimuli Responsive Supramolecular Gel Provides Insulin Hydrolysis Protection and Redox-Controlled Release of Actives [PDF]

open access: yes, 2020
Two supramolecular hydrogelators containing a central disulfide moiety and terminal carboxylic acid groups are studied. On the one hand, the hydrogels are responsive to a reductive environment, which transforms the disulfide unit to the corresponding ...
Angulo-Pachón, César A.   +4 more
core   +1 more source

Estimated carboxylic acid ester hydrolysis rate constants for food and beverage aroma compounds [PDF]

open access: yes, 2011
Aroma compounds in the Flavornet database were screened for potentially hydrolyzable carboxylic acid ester functionalities. Of the 738 aroma compounds listed in this database, 140 molecules contain carboxylic acid ester groups that may be amenable to ...
Kaya Forest, Sierra Rayne
core   +2 more sources

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