Results 21 to 30 of about 66,773 (266)

Ketones and brain development: Implications for correcting deteriorating brain glucose metabolism during aging

open access: yesOilseeds and fats, crops and lipids, 2016
Brain energy metabolism in Alzheimer’s disease (AD) is characterized mainly by temporo-parietal glucose hypometabolism. This pattern has been widely viewed as a consequence of the disease, i.e.
Nugent Scott   +5 more
doaj   +1 more source

Investigating the effectiveness of classical and eco-friendly approaches for synthesis of dialdehydes from organic dihalides

open access: yesGreen Processing and Synthesis, 2019
Monoaldehydes and dialdehydes are parts of millions of compounds and are extremely versatile intermediates. For the synthesis of monoaldehydes, one impressive approach to date, because of its excellent selectivity, high yield and stability towards over ...
Faisal Muhammad   +4 more
doaj   +1 more source

Synthesis and Oxidative Transformations of New Chiral Pinane-Type γ-Ketothiols: Stereochemical Features of Reactions

open access: yesMolecules, 2021
Chiral γ-ketothiols, thioacetates, thiobenzoate, disulfides, sulfones, thiosulfonates, and sulfonic acids were obtained from β-pinene for the first time.
Olga M. Lezina   +4 more
doaj   +1 more source

Selective oxidation of some primary and secondary benzylic alcohols to the corresponding carbonyl compounds with a Cu(III) complex [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
The selective oxidation of benzylic alcohols to the corresponding carbonyl compounds is described. In alkaline solution, the oxidation reagent potassium tetrasodium diperiodatocuprate(III) dodecahydrate (KNa4[Cu(HIO6)2]×12H2O) reacts with primary and ...
VLADAN KOSTIC   +2 more
doaj  

Ketones, omega-3 fatty acids and the Yin-Yang balance in the brain: insights from infant development and Alzheimer’s disease, and implications for human brain evolution★

open access: yesOilseeds and fats, crops and lipids, 2018
Optimal brain performance is intimately linked to the brain’s Yin and the Yang − the balance between its structure and its energy metabolism. This relationship is clearly exemplified in infant brain development and in Alzheimer’s disease, and probably ...
Cunnane Stephen C.
doaj   +1 more source

Alkynes as Synthetic Equivalents of Ketones and Aldehydes: A Hidden Entry into Carbonyl Chemistry

open access: yesMolecules, 2019
The high energy packed in alkyne functional group makes alkyne reactions highly thermodynamically favorable and generally irreversible. Furthermore, the presence of two orthogonal π-bonds that can be manipulated separately enables flexible synthetic ...
Igor V. Alabugin   +4 more
doaj   +1 more source

Mechanically induced oxidation of alcohols to aldehydes and ketones in ambient air: Revisiting TEMPO-assisted oxidations

open access: yesBeilstein Journal of Organic Chemistry, 2017
The present work addresses the development of an eco-friendly and cost-efficient protocol for the oxidation of primary and secondary alcohols to the corresponding aldehydes and ketones by mechanical processing under air. Ball milling was shown to promote
Andrea Porcheddu   +4 more
doaj   +1 more source

Highly substituted benzannulated cyclooctanol derivatives by samarium diiodide-induced cyclizations

open access: yesBeilstein Journal of Organic Chemistry, 2010
A series of γ-oxo esters suitably substituted with various styrene subunits was subjected to samarium diiodide-induced 8-endo-trig cyclizations. Efficacy, regioselectivity and stereoselectivity of these reactions via samarium ketyls strongly depend on ...
Jakub Saadi   +2 more
doaj   +1 more source

Naturally occurring long-chain β-hydroxyketones

open access: yesJournal of Lipid Research, 1971
A fraction comprising about 0.7% of the extractable surface lipids of cabbage (Brassica oleracea) leaves was isolated and identified as a mixture of isomeric βhydroxyketones consisting mainly of 14-keto-16-hydroxynonacosane and 15-keto-13 ...
HARALD H.O. SCHMID, PATRICIA C. BANDI
doaj   +1 more source

Comparison of the structure and thermal properties of a poly(aryl ether ketone ether ketone naphthyl ketone) with those of poly(aryl ether ketone ether ketone ketone)

open access: yese-Polymers, 2007
Abstract Poly(oxy-1,4-phenylene carbonyl-1,4-phenylene oxy-1,4-phenylene carbonyl-2,6-naphthalene carbonyl-1,4-phenylene) or 2,6-PEKEKNK is a polymer of the poly(aryl ether ketone) family differing from PEKEKK by the presence of a naphthyl group linked at positions 2 and 6 to the two ketone groups.
Dosière, Marcel   +3 more
openaire   +1 more source

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