Results 81 to 90 of about 258,848 (293)

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

N-(Thiazol-2-yl)acetamide [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2008
The title compound, C(5)H(6)N(2)OS, was synthesized from acetyl chloride and 2-amino-thia-zole in dry acetone. The asymmetric unit contains two mol-ecules. The crystal structure is stabilized by N-H⋯N and C-H⋯O hydrogen bonds.
Uzma Yunus   +3 more
openaire   +3 more sources

Vanillin production from lignin depolymerization by acidic deep eutectic solvent and its possible mechanism

open access: yesEnvironmental Progress &Sustainable Energy, EarlyView.
Abstract As one of the most abundant renewable resources and complex aromatic polymers, lignin holds great promise for producing monophenolic compounds. However, its depolymerization into valuable monomers is hindered by intricate side reactions. In this study, alkaline lignin was converted into vanillin using nine choline chloride‐based deep eutectic ...
Xiaoyan Chen, Xiaohui Pan, Dongyang Cui
wiley   +1 more source

Stereoselective synthesis of hydroxylated 3-aminoazepanes using a multi-bond forming, three-step tandem process [PDF]

open access: yes, 2012
A multi-bond forming, three-step tandem process involving a palladium(II)-catalysed Overman rearrangement and a ring closing metathesis reaction has been utilised for the efficient synthesis of a 2,3,6,7-tetrahydro-3-amidoazepine.
Ahmad   +63 more
core   +1 more source

Evaluation of Acephate Metabolites Generated by Zebrafish (Danio rerio) Using LC–HRMS and Metabolomics Approach

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT Acephate is an organophosphate insecticide widely used. This pesticide can be metabolized into methamidophos, a molecule highly toxic. Both have demonstrated the ability to promote serious toxic effects on nontarget organisms and have been identified in surface waters around the world. Therefore, it is important to understand their behavior in
Mariana Laiz Silva de Lima   +3 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

2-Chloro-N-(2,3-dichlorophenyl)acetamide

open access: yesActa Crystallographica Section E, 2008
The conformation of the N—H bond in the title compound (23DCPCA), C8H6Cl3NO, is syn to both the 2- and 3-chloro substituents in the aromatic ring, similar to the 2-chloro substituent in 2-chloro-N-(2-chlorophenyl)acetamide (2CPCA), the 2- and 3 ...
Hartmut Fuess   +2 more
doaj   +1 more source

Feasibility study for a secondary Na/S battery [PDF]

open access: yes
The feasibility of a moderate temperature Na battery was studied. This battery is to operate at a temperature in the range of 100-150 C. Two kinds of cathode were investigated: (1) a soluble S cathode consisting of a solution of Na2Sn in an organic ...
Abraham, K. M.   +2 more
core   +1 more source

Studi Pengaruh Waktu Reaksi terhadap Sintesis Senyawa Organonitrogen Berbasis α-Pinena melalui Reaksi Ritter [PDF]

open access: yes, 2013
The aim of this research is to synthesize organonitrogen compound using α-pinene as starting material which reacted with acetonitrile and acid catalysts through Ritter reaction. The reactions were optimized by modifying a reaction time varied from 6, 10,
Fatma, A. (Aliya)   +2 more
core   +1 more source

Indole‐Based π‐Extended Monophosphine Ligands for Enhanced Palladium‐Catalyzed Sonogashira Coupling

open access: yesJournal of Heterocyclic Chemistry, EarlyView.
A general palladium‐catalyzed Sonogashira cross‐coupling of (hetero)aryl chlorides with aliphatic, (hetero)aryl alkynes is described using Pd(dba)₂/PCy2‐Napdole‐phos catalyst system. The reaction protocol exhibits broad substrate scope and the catalyst loading can be down to 0.2 mol% Pd.
Yu Kiu Lau   +9 more
wiley   +1 more source

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