Results 31 to 40 of about 57,264 (283)

Decarboxylation of 2-keto fatty acids by brain

open access: yesJournal of Lipid Research, 1966
An enzyme system consisting of washed acetone powder of pig brain, adenosine triphosphate, nicotinamide adenine dinucleotide, magnesium, fumaric acid, and ascorbic acid was found to catalyze the oxidative decarboxylation of 2-ketostearic acid.
W. Ewart Davies   +4 more
doaj   +1 more source

Digital Technologies Applied to Control the One-Step Process of Cannabis Olive Oil Preparations

open access: yesPharmaceutics, 2023
The reproducibility of an extemporaneous preparation is an essential condition for guaranteeing the quality, efficacy, and safety of the medicinal product.
Paolo Bongiorno   +7 more
doaj   +1 more source

An Update of Transition Metal-Catalyzed Decarboxylative Transformations of Cyclic Carbonates and Carbamates

open access: yesMolecules, 2019
Functionalized cyclic organic carbonates and carbamates are frequently used in a number of transition metal-catalyzed decarboxylative reactions for the construction of interesting molecules.
Linhong Zuo   +3 more
doaj   +1 more source

The Fate of Sulfur Radical Cation of N-Acetyl-Methionine: Deprotonation vs. Decarboxylation

open access: yesPhotochem, 2023
In the present study, we investigated the photooxidation of the biomimetic model of C-terminal methionine, N-Acetyl-Methionine (N-Ac-Met), sensitized by a 3-Carboxybenzophenone (3CB) excited triplet in neutral and basic aqueous solutions. The short-lived
Katarzyna Grzyb   +2 more
doaj   +1 more source

Some photoinduced decarboxylation reactions.

open access: yes, 1971
Some of the fundamental aspects of photochemistry have been discussed. The photoinduced decarboxylation of carboxylic acids and carboxylate anions is reviewed, as well as decarboxylations sensitised by salts (e.g.
Peter Robert. Steiner (7683236)
core   +4 more sources

A Palladium-Catalyzed 4CzIPN-Mediated Decarboxylative Acylation Reaction of O-Methyl Ketoximes with α-Keto Acids under Visible Light

open access: yesMolecules, 2022
This work presents a palladium-catalyzed oxime ether-directed ortho-selective benzoylation using benzoylformic acid as the acyl source with a palladium catalyst and 4CzIPN as the co-catalyst under light.
Cheng Wang   +3 more
doaj   +1 more source

Enantioselective Synthesis of Chromanones Bearing an α,α-Disubstituted α-Amino Acid Moiety via Decarboxylative Michael Reaction

open access: yesMolecules, 2019
In this manuscript, a novel, decarboxylative Michael reaction between α-substituted azlactones and chromone-3-carboxylic acids is described. The reaction proceeds in a sequence Michael addition followed by decarboxylative deprotonation, and it ...
Jan Bojanowski   +2 more
doaj   +1 more source

Palladium-Catalyzed α-Arylation of Dimethyl Malonate and Ethyl Cyanoacetate with o-Alkoxybromobenzenes for the Synthesis of Phenylacetic Acid, Esters and Phenylacetonitriles

open access: yesSynOpen, 2017
α-Aryl malonate and α-aryl cyano acetate moieties are found in the structures of many bioactive compounds. They are also key intermediates for the synthesis of many compounds such as isoflavonoids.
José F. Cívicos   +2 more
doaj   +1 more source

Enantioselective, Decarboxylative (3+2)-Cycloaddition of Azomethine Ylides and Chromone-3-Carboxylic Acids

open access: yesMolecules, 2022
Herein, we describe the synthesis of a variety of chiral hybrid pyrrolidine-chromanone polycyclic derivatives. A convenient (3+2)-annulation of azomethine ylides with chromone-3-carboxylic acid realized under Brønsted base catalysis produced highly ...
Ewelina Kowalska   +2 more
doaj   +1 more source

Evidence for an Iminium Cation Intermediate and its Non‐Oxidative Decarboxylation in a Cerium (IV)‐Mediated Oxidative Decarboxylation. Preliminary communication [PDF]

open access: yes, 1980
Evidence is provided for the occurrence of a non‐oxidative decarboxylation in an iminium cation intermediate which is produced in an oxidative decarboxylation induced by cerium (IV). Copyright © 1980 Verlag GmbH & Co.
Samir B. Hanna   +3 more
core   +1 more source

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