Results 41 to 50 of about 563 (145)

Pyridine-containing polymers/graphene oxide composites: synthesis, characterization, and application for the recovery of phenolic compounds

Polymer Testing
In this study, novel polymer/graphene oxide (GO) composites were engineered for the adsorption and recovery of phenolic compounds from olive mill wastewater.
Naila Mraieh, Ibtissem Jlalia, Nicole Jaffrezic-Renault, Regis Mercier, Steffen Weidner, Agnès Crepet, Catherine Marestin, Saber Chatti, Houyem Abderrazak, Emmanuel Beyou   +9 more
doaj   +1 more source

Metal‐Free Wet Chemistry for the Fast Gram‐Scale Synthesis of γ‐Graphyne and its Derivatives

Angewandte Chemie, Volume 136, Issue 50, December 9, 2024.
Fast gram‐scale production of γ‐Graphyne has been successfully achieved by a metal‐free nucleophilic crosslinking wet chemical method. This synthetic strategy shows remarkable tolerance to various functional groups, enabling the preparation of diverse F‐/N‐rich γ‐Graphyne derivatives.
Tao Song, Hong Liu, Haiyuan Zou, Cheng Wang, Siyan Shu, Hao Dai, Lele Duan   +6 more
wiley   +2 more sources

Ringspannungs‐vermittelte Aktivierung von Pyridinen durch einen gesättigten BSi2‐Ring

Angewandte Chemie, Volume 138, Issue 1, 2 January 2026.
Wir berichten über ein stark gespanntes Boratadisiliran mit dem bisher nicht zugänglichen anionischen BSi2‐Ringmotiv. Die Spaltung der S–Si‐Bindung während der Reaktionen mit Pyridinderivate aktiviert diese auf drei verschiedene Arten: (1) Bei Pyridin selbst erfolgt eine selektive ortho‐CH‐Aktivierung und ein gleichzeitiger Wasserstofftransfer zu einem
Nasrina Parvin, Ankur, Philipp Willmes, Bernd Morgenstern, Cem B. Yildiz, David Scheschkewitz   +5 more
wiley   +1 more source

Deuteration of Six‐Membered N‐Heteroarenes: Chemistry and Applications

Chemistry – A European Journal, Volume 31, Issue 67, December 1, 2025.
Deuterated six‐membered N‐Heteroarenes (6NHetAr) are finding utility in an increasing repertoire of applications. Our paper comprehensively reviews synthetic approaches that have been reported for the deuteration of 6NHetAr and their fused counterparts while providing an overview of established and emerging applications for these materials.
Liju Raju, Davide Benedetto Tiz, Adrian Iles, Janez Košmrlj, Ross D. Jansen‐van Vuuren   +4 more
wiley   +1 more source

Mechanism of the Catalytic Hydrodefluorination of Pentafluoropyridine by Group Six Triangular Cluster Hydrides Containing Phosphines: A Combined Experimental and Theoretical Study

, 2016
The catalytic hydrodefluorination (HDF) of pentafluoropyridine in the presence of arylsilanes is catalyzed by the tungsten and molybdenum(IV) cluster hydrides of formula [M3S4H3(dmpe)3]+, W-1+ for M = W and Mo-1+ for M = Mo (dmpe = 1,2-(bis ...
Marta Feliz (2206738), Rosa Llusar (1687291), Jose A. Mata (1709563), Tomás F. Beltrán (2073322), Vicent S. Safont. (2236312)   +4 more
core   +2 more sources

Activation in Organic and Macromolecular Including Peptide Synthesis by Fluorinated Carboxylic Acids and Derivatives

European Journal of Organic Chemistry, Volume 28, Issue 44, November 28, 2025.
This concept paper highlights the importance and the historical developments of activated carboxylic acids in organic, macromolecular, bioorthogonal, and peptide synthesis. It dicusses the use of activated ester, including fluorinated activated ester and other activated carboxylic acid derivatives.
Virgil Percec, Jasper Adamson, Devendra S. Maurya   +2 more
wiley   +1 more source

Reactivity of a palladium fluoro complex towards silanes and Bu3SnCH = CH2: catalytic derivatisation of pentafluoropyridine based on carbon-fluorine bond activation reactions

, 2006
Braun T, Izundu J, Steffen A, Neumann B, Stammler H-G. Reactivity of a palladium fluoro complex towards silanes and Bu3SnCH = CH2: catalytic derivatisation of pentafluoropyridine based on carbon-fluorine bond activation reactions.
Braun, Thomas, Izundu, Joseph, Stammler, Hans-Georg, Neumann, Beate, Steffen, Andreas   +4 more
core   +1 more source

Efficient Synthesis of 1‐Chloroimidazo[1,2‐a:4,5‐c']dipyridines, Versatile Synthons for Position‐1 Functionalisation with Various Reagents

ChemistryOpen, Volume 14, Issue 11, November 2025.
Imidazo[1,2‐a:4,5‐c']dipyridines are remarkable skeletons in the field of medicinal chemistry. This article presents the synthesis of 1‐chloroimidazo[1,2‐a:4,5‐c']dipyridines, versatile synthons to functionalize at position‐1. Several examples of further reactions are presented, including Suzuki–Miyaura and Sonogashira cross‐couplings, nucleophilic ...
Romain Dussart, Mélanie Pénichon, Pierre‐Olivier Delaye, Cécile Enguehard‐Gueiffier   +3 more
wiley   +1 more source

S‐Aryl Substitution Enhances Acidity of the 1,2,4‐Triazolium Scaffold

European Journal of Organic Chemistry, Volume 27, Issue 45, December 2, 2024.
A large series of novel N,N‐dialkyl‐1,2,4‐triazolium salts with 3‐S‐aryl substituents was prepared from neutral S‐aryl triazole precursors. High protofugalities (kinetic acidities) were demonstrated for C(5)‐H highlighting the acidifying effect of the distal C(3)‐sulfur with mechanistic insight obtained from XRD‐protofugality correlations. Abstract The
Matthew S. Smith, Toby J. Blundell, Ian Hickson, AnnMarie C. O'Donoghue   +3 more
wiley   +1 more source

Contrasting Reactivity of Fluoropyridines at Palladium and Platinum:  C−F Oxidative Addition at Palladium, P−C and C−F Activation at Platinum^†

, 2016
The divergent behavior of palladium(0) and platinum(0) is revealed in the reactivity of [M(PR3)2] (M = Pd or Pt; R = Cy or iPr) toward pentafluoropyridine and 2,3,5,6-tetrafluoropyridine.
Sascha Rothfeld (2699479), Naseralla A. Jasim (2169676), Hans-Georg Stammler (1549579), Joseph Izundu (2378497), Robin N. Perutz (1305213), Thomas Braun (269597), Beate Neumann (132351), Adrian C. Whitwood (1305204)   +7 more
core   +2 more sources