Results 1 to 10 of about 27,755 (188)

Synthesis and Properties of Novel Reactive Dyes Comprising Acyl Fluoride Group on Cotton Fabrics [PDF]

open access: yesMolecules, 2022
Novel reactive dyes with mono- and bi-acyl fluoride reactive groups have been designed and synthesized, which are obtained by using 2-amino-8-naphthol-6-sulfonic acid or 1-amino-8-naphthol-3,6-disulfonicacid as the coupling component and 4-aminobenzoyl ...
Canxing Zhao   +5 more
doaj   +4 more sources

Direct Fluoroformylation of the C3‐Position of Indoles with 2,4‐Dinitro(trifluoromethoxy)benzene as Fluorocarbonyl Source [PDF]

open access: yesChemistryOpen
We herein report the direct fluoroformylation of indoles and other heteroaromatic cycles. Acyl fluorides are very useful moieties in coupling reactions with or without metal.
Lilian Wisson   +5 more
doaj   +2 more sources

Photoinduced Cleavage of Alkenyl Fluorides for Nucleophilic Acyl Substitution via In Situ Generated Acyl Fluorides. [PDF]

open access: yesOrg Lett
Acyl fluorides are valuable intermediates due to their stability and unique reactivity with amines, enabling selective acyl substitution. We report a mild, one-pot method to access amides, esters, and thioesters from alkenyl fluorides. Visible-light photoexcitation of 4-nitrophthalonitrile promotes cleavage of the alkenyl fluoride, forming acyl ...
Gogarnoiu ES   +5 more
europepmc   +2 more sources

Selective O‐Acylation of Enol Silyl Ethers with Acyl Fluorides Catalyzed by Fluoride Ions Derived from Potassium Fluoride and 18‐Crown‐6

open access: yesChemistryOpen
The fluoride ion‐catalyzed selective O‐acylation of enol silyl ethers with acyl fluorides using KF and 18‐Crown‐6 is described herein. This catalytic system facilitated the practical and facile reaction of a variety of enol silyl ethers derived from ...
Prof. Dr. Norio Sakai   +6 more
doaj   +3 more sources

The metagenome and metabolome signatures of dental biofilms associated with severe dental fluorosis [PDF]

open access: yesJournal of Oral Microbiology
Objective To explore the plaque biofilm microbiome associated with severe dental fluorosis (SF), and to describe its metagenome and metabolome.Methods Sixteen plaque biofilm samples were collected from eight 6- to 15-year-old Thai children with SF and ...
Penpitcha Ajrithirong   +8 more
doaj   +2 more sources

Nickel-Catalyzed Decarbonylative Stannylation of Acyl Fluorides under Ligand-Free Conditions [PDF]

open access: yesMolecules, 2019
Nickel-catalyzed decarbonylative stannylation of acyl fluorides under ligand-free conditions was disclosed. A variety of aromatic acyl fluorides are capable of reacting with silylstannanes in the presence of cesium fluoride.
Xiu Wang   +4 more
doaj   +3 more sources

Rapid peptide synthesis using a methylimidazolium sulfinyl fluoride salt [PDF]

open access: yesCommunications Chemistry
Peptide couplings have been a subject of investigation for over a century, with modern research seeking to discover new methodologies that minimize purification steps, minimize reagent expense, and/or decrease reaction times.
Joey Lai   +4 more
doaj   +2 more sources

Enantioselective Acylation of Silyl Ketene Acetals through Fluoride Anion-Binding Catalysis [PDF]

open access: yesJournal of the American Chemical Society, 2011
A highly-enantioselective acylation of silyl ketene acetals with acyl fluorides has been developed to generate useful \(\alpha\), \(\alpha\)-disubstituted butyrolactone products.
Birrell, James Andrew   +2 more
core   +5 more sources

Palladium-Catalyzed Decarbonylative Alkylation of Acyl Fluorides [PDF]

open access: yesOrganic Letters, 2020
Palladium-catalyzed decarbonylative alkylation reactions of acyl fluorides have been developed using alkylboranes having β-hydrogens. A wide range of functional groups were well tolerated, even at the high temperature required for decarbonylation. This protocol provides a diverse C(sp2)-C(sp3) bond formation via a highly efficient decarbonylative ...
Liyan Fu   +3 more
openaire   +3 more sources

Functionalized porphyrins from meso-poly-halogeno-alkyl-dipyrromethanes: synthesis and characterization

open access: yesComptes Rendus. Chimie, 2021
Starting from pyrrole-carbinol derivatives, a set of three optimized experimental conditions was used to prepare six dipyrromethanes (DPM) bearing meso-poly-halogeno-alkyl chains. On the one hand, the condensation of $p$-anisaldehyde and the DPMs bearing
Julliard, Paul-Gabriel   +5 more
doaj   +1 more source

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