Results 21 to 30 of about 5,053 (175)

Synthesis of tacrine analogues derived from n-aryl-5-amino-4-cyanopyrazoles [PDF]

open access: yes, 2008
Synthesis of eleven tacrine analogues derived from N-aryl-5-amino-4-cyanopyrazoles, by a Friedländer type reaction, is described. Their structures were confirmed by 1H and 13C NMR spectroscopy, elemental analysis and/or mass spectrometry.Fundação para a ...
Abdellatif M. Salaheldin   +5 more
core   +1 more source

A Photoredox Radical‐Polar Crossover Reaction for the Preparation of Monoprotected Dicarbonyl Compounds

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
An ATRA‐based, Ru‐photocatalyzed radical‐polar crossover reaction for the preparation of monoprotected dicarbonyl compounds is reported. This procedure is based on the capture of a cationic intermediate, arising from the radical step, with diverse nucleophiles.
Derek Mota‐Hernández   +2 more
wiley   +1 more source

Discovering new arene-catalyzed lithiations [PDF]

open access: yes, 2010
La litiació catalitzada per hidrocarburs aromàtics és una metodologia útil i versàtil que promou els processos de litiació en condicions de reacció molt suaus.
Yus, Miguel
core  

5,6-Dihydro-2H-pyran-3(4H)-on als Baustein zur Synthese pyrananellierter Heterocyclen [PDF]

open access: yes, 1984
Während 5,6-Dihydro-2H-pyran-3(4H)-on (3) sich mit ortho-substituierten Phenylcarbonylverbindungen nur in Einzelfällen regioselektiv zu pyrananellierten Heterocyclen umsetzt - z. B.
Eiden, Fritz, Wanner, Klaus Th.
core   +1 more source

Recent Advances in Conjugated Microporous Polymers for Photocatalysis: Mechanism, Synthesis and Applications

open access: yesExploration, EarlyView.
Conjugated microporous polymers (CMPs) have attracted more and more attention as new photocatalysts due to their unique advantages such as high performance, long stability and strong light absorption. This review summarizes the application of CMPs as a photocatalyst in recent years and introduces the catalytic mechanism.
Dun Zhou   +5 more
wiley   +1 more source

Metal-mediated intramolecular hydroamination and hydro(acy)alkoxylation reactions [PDF]

open access: yes, 2012
This PhD thesis describes work undertaken to effect asymmetric catalysis in hydroamination and hydro(acy)alkoxylation reactions of allenes. The introductory Chapter provides an overview of recent advances in asymmetric heterofunctionalisation reactions ...
Arbour, Jannine Louise   +1 more
core   +1 more source

Lueyang Black‐Boned Chicken and Black Bean Soup Promoting the Acute Healing of Skin Wounds, Accompanying Special Flavor Substances

open access: yesFood Chemistry International, EarlyView.
ABSTRACT Animal protein and plant protein make the protein supplement more comprehensive and further optimize the nutritional structure of the national diet. In this study, a “dual protein” Lueyang black‐boned chicken and black bean soup (FS) was prepared.
Mengya Zhao   +6 more
wiley   +1 more source

Phenolic Profiles, Antioxidant Properties and Predicted Glycaemic Index of Bread Sweetened With Date Syrup in Comparison With Granulated Sugar

open access: yesFood Chemistry International, EarlyView.
Date syrup are used as sweetener in bread. Bread with date syrup had superior phenolic composition, better antioxidant properties and carbohydrate hydrolysing enzymes while bread with granulated sugar had higher predicted glyceamic index. The study concluded that date syrup could be the next though‐out ingredient for dual purpose in bread. ABSTRACT The
Akinsola Albert Famuwagun   +7 more
wiley   +1 more source

Photocaged and Water‐Soluble Glucose Functionalization for Spatiotemporal Acidification Pathways

open access: yesHelvetica Chimica Acta, EarlyView.
Light‐controlled glucose release from a water‐soluble coumarin photocage enables spatiotemporal acid generation in enzyme‐driven chemical reaction networks. ABSTRACT The spatiotemporal control of complex molecular systems, such as chemical reaction networks (CRNs), requires reagents and reactive species that can be activated both efficiently and ...
Nikolai Hempel   +2 more
wiley   +1 more source

Effect of Epigallocatechin‐3‐Gallate on Depression‐Related Cytokines in Thalassemia Patients: Molecular and Cellular Evaluation

open access: yesJournal of Clinical Laboratory Analysis, EarlyView.
This study investigates the effects of Epigallocatechin‐3‐Gallate (EGCG), a potent anti‐inflammatory polyphenol isolated from Winged Marigold, on cytokine expression linked to depression in β‐thalassemia patients. EGCG demonstrated dose‐dependent suppression of key inflammatory cytokines (IL‐6, IL‐1β, TNF‐α, IFN‐γ) at both gene and protein levels ...
Mohammed N. Salman   +5 more
wiley   +1 more source

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