Results 51 to 60 of about 563 (145)

On the Mechanism of Phosphonofluoridate and Phosphonic Acid Anhydride Syntheses Using Pentafluoropyridine

A method for the fluorination of phosphonic acids is described that does not require anhydrous conditions. Mechanistically, we show that pentafluoropyridine (PFP) functions as an activator and fluoride source, quantitatively forming phosphonofluoridic ...
Adil Alkaş, David L. Jakeman
core   +1 more source

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

, 2010
[EN] The catalytic hydrodefluorination (HDF) of pentafluoropyridine in the presence of arylsilanes is catalyzed by the tungsten and molybdenum(IV) cluster hydrides of formula [M3 S4 H3(dmpe)3] ¿, W-1¿for M = W and Mo-1¿for M = Mo (dmpe = 1,2-(bis ...
Mata Martínez, Jose A, Tomás F. Beltrán, Beltran, Tomas F., Marta Feliz, Jose A. Mata, Rosa Llusar, Vicent S. Safont., Llusar, Rosa, Mata, Jose A., Safont, Vicent S., Safont Villarreal, Vicent Sixte, Feliz Rodriguez, Marta, Beltrán Álvarez, Tomás Francisco   +12 more
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Enhancing cycle life of nickel-rich LiNi0.9Co0.05Mn0.05O2 via a highly fluorinated electrolyte additive - pentafluoropyridine

, 2021
A highly fluorinated additive, pentafluoropyridine (PFP), is used here to enhance the interfacial stability of the Ni-rich LiNi0.9Co0.05Mn0.05O2 (NCM90) cathode at a cut-off voltage of 4.3 V vs. Li/Li+ at 30 °C.
Zhou, Ke, Zheng, Jianming, Zou, Yue, Jiao, Tianpeng, Zhang, Xiaozhen, Wu, Qilong, Chen, Xunxin, Liu, Gaopan, Yang, Yong   +8 more
core  

A mild method for the synthesis of a novel dehydrobutyrine-containing amino acid [PDF]

, 2014
Dehydrobutyrine is an amino acid that is present in a range of peptide natural products. Reaction of pentafluoropyridine with threonine and subsequent E1cb-type elimination allowed the preparation of novel dehydrobutyrine-containing amino acids under ...
Sandford, Graham, Webster, Alexandra M., Coxon, Christopher R., Kenwright, Alan M., Cobb, Steven L.   +4 more
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Rapid Intermolecular Carbon−Fluorine Bond Activation of Pentafluoropyridine at Nickel(0):  Comparative Reactivity of Fluorinated Arene and Fluorinated Pyridine Derivatives

, 2016
Reaction of hexafluorobenzene with Ni(COD)2 (COD = 1,5,-cyclooctadiene) in the presence of triethylphosphine or with Ni(PEt3)4 at room temperature results in very slow formation of trans-Ni(PEt3)2(C6F5)F (1).
Catherine L. Higgitt (3084918), Ralf Karch (2414062), Leroy Cronin (538206), Robin N. Perutz (1305213)   +3 more
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Selective activation of the ortho C?F bond in pentafluoropyridine by zerovalent nickel:Reaction via a metallophosphorane intermediate stabilized by neighboring group assistance from the pyridyl nitrogen

, 2010
Density functional theory is used to explore the origins of the chemoselectivity and regioselectivity of activation of C?F bonds in pentafluoropyridine with [Ni(PR3)2] species.
Perutz, Robin N., Macgregor, Stuart A., McGrady, John E., Nova, Ainara, Reinhold, Meike, Nova, A, McGrady, JE, Macgregor, SA, Reinhold, M, Perutz, RN   +9 more
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Synthesis and molecular structure of a perfluorinated pyridyl carbanion

, 2012
Reaction of pentafluoropyridine with sodium nitromethanide allowed the isolation and characterisation of the first perfluorinated pyridyl carbanion system, sodium nitrobis(perfluoropyridin-4-yl)methanide, by X-ray ...
Pohl, E., Colgin, N., Cobb, S.L., Tatum, N.J., Sandford, G.   +4 more
core   +1 more source

On pyridine chloronium cations. [PDF]

Chem Sci, 2023
Pröhm P, Berg W, Rupf SM, Müller C, Riedel S.   +4 more
europepmc   +1 more source

Experimental Study of the Reaction of a Ni(PEt₃)₂ Synthon with Polyfluorinated Pyridines: Concerted, Phosphine-Assisted, or Radical C–F Bond Activation Mechanisms?

, 2016
The mechanisms of the C–F activation reactions of 2,3,5,6-tetrafluoropyridine and pentafluoropyridine with the phenanthrene adduct (PEt3)2Ni­(η2-C14H10) and Ni­(PEt3)4 as sources of (PEt3)2Ni were investigated.
Jillian A. Hatnean (2110288), Samuel A. Johnson (1456048)   +1 more
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Au(I) Catalyzed HF Transfer: Tandem Alkyne Hydrofluorination and Perfluoroarene Functionalization. [PDF]

ACS Catal, 2022
Mulryan D, Rodwell J, Phillips NA, Crimmin MR.   +3 more
europepmc   +1 more source