Results 21 to 30 of about 1,389 (220)

Electrochemical amination of para-chloroaniline

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2019
The process of cation-radical amination of para-chloroaniline using hydroxylamine and the Ti(IV)/Ti(III) mediator system was studied in aqueous solutions of 9–17 M H2SO4.
Yu.A. Lisitsyn
doaj   +1 more source

Surface acoustic wave nebulization improves compound selectivity of low-temperature plasma ionization for mass spectrometry

open access: yesScientific Reports, 2021
Mass spectrometry coupled to low-temperature plasma ionization (LTPI) allows for immediate and easy analysis of compounds from the surface of a sample at ambient conditions.
Andreas Kiontke   +5 more
doaj   +1 more source

A Fast and Efficient Method for the Synthesis of 1,5-Benzodiazepine Derivatives Under Solvent-Free Conditions [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2007
Silica sulfuric acid is found to catalyze efficiently the condensation of o-phenylenediamines with various linear and cyclic ketones to afford the corresponding 1,5-benzodiazepines in quantitative yields under solvent-free conditions at room ...
Ahmad Shaabani, Ali Maleki
doaj  

Research of composition and structure of complex Cd(II) tetrafluoroborates with phenylenediamines

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2016
Borofluoric acid and its various products, for example complex metals tetrafluoroborates, become widely used in electrochemical processes at refinement of metals, when receiving soldering fluxes.
M.V. Shestakova, A.N. Chebotarev
doaj   +1 more source

Recent advances in photocatalytic hydrogen peroxide production

open access: yesPhotoMat, EarlyView., 2023
We classify the representative photocatalytic materials for photosynthesis of hydrogen peroxide (H2O2) in recent years and discuss the related modification methods in detail, providing inspiration and insights for the future design of photocatalysts for H2O2 production.
Jinyu Yan   +4 more
wiley   +1 more source

Illegally additives determination by thin layer chromatography

open access: yesMATEC Web of Conferences, 2016
To find out a simple TLC method, which could identify m-phenyenediamine and o-phenylenediamine in several colors of oxidation hair coloring products simultaneously. The colors includes black, yellow, brown and red. A small amount of the sample was placed
Liang Xin   +3 more
doaj   +1 more source

The Novel Inducer of Innate Immunity HO53 Stimulates Autophagy in Human Airway Epithelial Cells

open access: yesJournal of Innate Immunity, 2022
Aroylated phenylenediamines (APDs) are novel modulators of innate immunity with respect to enhancing the expression of antimicrobial peptides and maintaining epithelial barrier integrity.
Iwona T. Myszor   +6 more
doaj   +1 more source

m-Phenylenediamine [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2008
In the title compound, C(6)H(8)N(2), there are four mol-ecules in the asymmetric unit, with each mol-ecule, including the H atoms on the N atoms of the amino groups, showing local C2 symmetry. In the crystal structure, all except one of the NH(2) groups participate in N-H⋯O hydrogen bonding.
Peter Mayer   +2 more
openaire   +4 more sources

Phenylenediamines and quinone derivatives: analytical advances

open access: yesReviews in Analytical Chemistry
Phenylenediamines (PDs) and their N,N′-substituted derivatives (PPDs) are widely used antiozonants in rubber and polymer manufacturing, with significant release into the environment via tire wear particles.
Lucarini Fiorella, Staedler Davide
doaj   +1 more source

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

open access: yesAdvanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He   +5 more
wiley   +1 more source

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