Results 91 to 100 of about 352,111 (240)

Exchange reactions of poly(arylene ether ketone) dithioketals with aliphatic diols: formation and deprotection of poly(arylene ether ketal)s [PDF]

, 2017
The dithioketal derivatives of industrially important, semi-crystalline poly(arylene ether ketone)s undergo facile exchange with aliphatic diols in the presence of N-bromo-succinimide to give a range of novel poly(arylene ether ketal)s.
Colquhoun, Howard, Cross, Paul, Manolakis, Ioannis   +2 more
core   +1 more source

The Role of Exogenous Ketones in Road Cycling: Evidence, Mechanisms, and Performance Claims

Physiologia
Background: Ketone body supplementation has emerged as a potential ergogenic aid in cycling. Exogenous ketones, primarily in the form of beta-hydroxybutyrate, offer an alternative fuel source, bypassing the need for strict ketogenic diets.
Sebastian Sitko
doaj   +1 more source

Stereoselective synthesis of tricyclic compounds by intramolecular palladium-catalyzed addition of aryl iodides to carbonyl groups

Beilstein Journal of Organic Chemistry, 2016
Starting from γ-ketoesters with an o-iodobenzyl group we studied a palladium-catalyzed cyclization process that stereoselectively led to bi- and tricyclic compounds in moderate to excellent yields.
Jakub Saadi, Christoph Bentz, Kai Redies, Dieter Lentz, Reinhold Zimmer, Hans-Ulrich Reissig   +5 more
doaj   +1 more source

Photosensitive filler minimizes internal stresses in epoxy resins [PDF]

, 1967
Photosensitive filler is added to curable epoxy resins to minimize stress from internal shrinkage during curing or polymerization. Cinnamic acid resins and cinnamal ketones may be added in the amount of 1 to 3 percent by weight of the resin ...
Dillon, J. N.
core   +1 more source

Can Ketones Help Rescue Brain Fuel Supply in Later Life? Implications for Cognitive Health during Aging and the Treatment of Alzheimer’s Disease

Frontiers in Molecular Neuroscience, 2016
We propose that brain energy deficit is an important pre-symptomatic feature of Alzheimer’s disease (AD) that requires closer attention in the development of AD therapeutics. Our rationale is fourfold: (i) Glucose uptake is lower in the frontal cortex of
S. Cunnane, A. Courchesne-Loyer, Camille Vandenberghe, Valérie St‐Pierre, M. Fortier, Marie Hennebelle, E. Croteau, C. Bocti, T. Fulop, C. Castellano   +9 more
semanticscholar   +1 more source

The Role of Beta-Hydroxybutyrate in Mitigating the Inflammatory and Metabolic Consequences of Uric Acid

Metabolites
Background: Uric acid (UA), a metabolite of purine and fructose metabolism, is linked to inflammation and metabolic disorders, including gout and cardiovascular disease.
Nicole P. Remund, John G. Larsen, Marley J. Shin, Cali E. Warren, Isabelle L. Palmer, Iris J. Kim, Elijah T. Cooper-Leavitt, Derek M. Clarke, Colson G. Beus, Richard J. Johnson, Juan A. Arroyo, Paul R. Reynolds, Benjamin T. Bikman   +12 more
doaj   +1 more source

Dimethylamine as the key intermediate generated in situ from dimethylformamide (DMF) for the synthesis of thioamides

Beilstein Journal of Organic Chemistry, 2015
An improved and efficient method for the synthesis of thioamides is presented. For this transformation, dimethylamine as the key intermediate is generated in situ from dimethylformamide (DMF).
Weibing Liu, Cui Chen, Hailing Liu
doaj   +1 more source

Friedel–Crafts acylation of arenes with carboxylic acids using polystyrene-supported aluminum triflate [PDF]

Journal of the Serbian Chemical Society, 2011
Cross-linked polystyrene-supported aluminum triflate (Ps–Al(OTf)3) has been shown to be a mild, efficient, and chemoselective heterogeneous Lewis acid catalyst for the acylation of aromatic compounds.
KAVEH PARVANAK BOROUJENI, KAMRAN PARVANAK   +1 more
doaj  

Application of the semi-empirical topological index in quantitative structure-chromatographic retention relationship (QSRR) studies of aliphatic ketones and aldehydes on stationary phases of different polarity

Journal of the Brazilian Chemical Society, 2004
The semi-empirical topological index, previously developed by Heinzen and Yunes, has been applied to predict the chromatographic retention of aliphatic ketones and aldehydes on stationary phases of different polarities (HP-1, HP-50, DB-210 and Innowax ...
Junkes Berenice da S., Amboni Renata D. de M. C., Yunes Rosendo A., Heinzen Vilma E. F.   +3 more
doaj  

Tautomeric Equilibria Studies by Mass Spectrometry [PDF]

, 2008
Tautomerism in organic chemistry has been extensively studied in condensed phase by spectrometric methods, mainly by IR and NMR techniques. Mass spectrometry studies start 40 years ago but just recently it has been recognized the importance of the mass ...
Eduardo A. Castro, Jorge J. Furlong, Mercedes M. Schiavonni, Patricia E. Allegretti   +3 more
core   +1 more source