Results 1 to 10 of about 18,476 (137)

Selective Esterification of Phosphonic Acids [PDF]

open access: yesMolecules, 2021
Here, we report straightforward and selective synthetic procedures for mono- and diesterification of phosphonic acids. A series of alkoxy group donors were studied and triethyl orthoacetate was found to be the best reagent as well as a solvent for the ...
Damian Trzepizur   +3 more
doaj   +2 more sources

Microwave-Accelerated McKenna Synthesis of Phosphonic Acids: An Investigation [PDF]

open access: yesMolecules, 2023
Phosphonic acids represent one of the most important categories of organophosphorus compounds, with myriad examples found in chemical biology, medicine, materials, and other domains.
Dana Mustafa   +3 more
doaj   +2 more sources

Benzyl trichloroacetimidates as derivatizing agents for phosphonic acids related to nerve agents by EI-GC-MS during OPCW proficiency test scenarios [PDF]

open access: yesScientific Reports, 2022
The use of benzyl trichloroacetimidates for the benzylation of phosphonic acid nerve agent markers under neutral, basic, and slightly acidic conditions is presented.
Alagu Subramanian   +3 more
doaj   +2 more sources

Natural Product-Derived Phosphonic Acids as Corrosion Inhibitors for Iron and Steel [PDF]

open access: yesMolecules, 2022
Organic acids, typically derived from an oil-based value chain, are frequently used as corrosion inhibitors in industrial metal working fluids. The criteria for selection of these corrosion inhibitors have changed in the last decades, and are today not ...
Erik Ruf   +4 more
doaj   +2 more sources

Straightforward Immobilization of Phosphonic Acids and Phosphoric Acid Esters on Mesoporous Silica and Their Application in an Asymmetric Aldol Reaction [PDF]

open access: yesNanomaterials, 2019
The combined benefits of moisture-stable phosphonic acids and mesoporous silica materials (SBA-15 and MCM-41) as large-surface-area solid supports offer new opportunities for several applications, such as catalysis or drug delivery.
Christian Weinberger   +9 more
doaj   +2 more sources

Combined Experimental and Theoretical Insights into the Corrosion Inhibition Activity on Carbon Steel Iron of Phosphonic Acids [PDF]

open access: yesMolecules, 2020
The inhibition effect of N,N′-phosphonomethylglycine (PMG) and vinyl phosphonic acid (VPA) on the 3% NaCl acidic solution corrosion of carbon steel iron was studied at different immersion times by potentiodynamic polarization, electrochemical impedance ...
Aurelia Visa   +5 more
doaj   +2 more sources

Design of Hybrid PAH Nanoadsorbents by Surface Functionalization of ZrO2 Nanoparticles with Phosphonic Acids [PDF]

open access: yesNanomaterials, 2021
This study focuses on the preparation of innovative nanocomposite materials based on surface modification of commercial nano-ZrO2 optimized from Brønsted acid–base surface reactions.
Nadine Bou Orm   +6 more
doaj   +2 more sources

Dual targeting of cancer-related human matrix metalloproteinases and carbonic anhydrases by chiral N-(biarylsulfonyl)-phosphonic acids [PDF]

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2017
A series of nanomolar phosphonate matrix metalloproteinase (MPP) inhibitors was tested for inhibitory activity against a panel of selected human carbonic anhydrase (CA, EC 4.2.1.1) isozymes, covering the cancer-associated CA IX and XII.
Grazia Luisi   +8 more
doaj   +2 more sources

Monomers for adhesive polymers, 18. Synthesis, photopolymerization and adhesive properties of polymerizable α-phosphonooxy phosphonic acids [PDF]

open access: yesDesigned Monomers and Polymers, 2017
Four polymerizable α-phosphonooxy phosphonic acids 7a, 7b, 9 and 16 were synthesized in seven steps. They were characterized by 1H, 13C and 31P NMR spectroscopy and by high-resolution mass spectroscopy.
Yohann Catel   +2 more
doaj   +2 more sources

Investigation of Phosphonic Acids Based on Raman and Surface-Enhanced Raman Spectroscopy [PDF]

open access: yesACS Omega
Linus Pauling F. Peixoto   +11 more
doaj   +2 more sources

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