Heterocyclic Synthesis of Crowded Aposafranones: Structure of 1‐Methyl‐8‐dimethylamino‐10‐phenylphenazin‐2‐(10H)one and Related Compounds [PDF]
ChemistryOpen, 2023 Oxidative condensation of three p‐phenylenediamines with 3‐hydroxy‐2‐methyl‐N‐(phenylamino)benzene gives new coloured aposafranones. 2‐Methylresorcinol is easy to convert into the asymmetric building block 3‐hydroxy‐2‐methyl‐N‐(phenylamino)benzene with ...
Dr. M. John Plater +1 more
doaj +4 more sources
Regioselective Radical Arene Amination for the Concise Synthesis of ortho-Phenylenediamines. [PDF]
Journal of the American Chemical Society, 2021 The formation of arene C-N bonds directly from C-H bonds is of great importance and there has been rapid recent development of methods for achieving this through radical mechanisms, often involving reactive N-centered radicals.
Gillespie, James E +2 more
core +2 more sources
Beilstein Journal of Organic Chemistry, 2017 3-Acylmethylidene-3,4-dihydroquinoxalin-2(1H)-ones are compounds which possess a wide range of physical and pharmaceutical applications. These compounds can be easily prepared by cyclocondensation of o-phenylenediamines and aroylpyruvates ...
Juraj Dobiaš +3 more
doaj +2 more sources
A mild and scalable one-pot synthesis of N-substituted 2-aminobenzimidazoles via visible light mediated cyclodesulfurization [PDF]
Scientific ReportsA visible light mediated photocatalyst-free synthesis of N-substituted 2-aminobenzimidazoles directly from o-phenylenediamines and isothiocyanates is developed in a one-pot fashion.
Tanawat Rerkrachaneekorn +4 more
doaj +2 more sources
Structural and Quantitative Analysis of Polyfluoroalkyl Substances (PFASs) and Para-Phenylenediamines (PPDs) by Direct Analysis in Real Time Ion Mobility Mass Spectrometry (DART-IM-MS) [PDF]
MoleculesPolyfluoroalkyl substances (PFASs) and para-phenylenediamines (PPDs) are emerging classes of anthropogenic contaminants that are environmentally persistent (most often found in ground and surface water sources), bioaccumulative, and harmful to human ...
Calum Bochenek +3 more
doaj +2 more sources
Surface acoustic wave nebulization improves compound selectivity of low-temperature plasma ionization for mass spectrometry [PDF]
Scientific 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 +2 more sources
Oxidative stress generated DNA damage by 6PPD and other tyre additives in A549 human lung epithelial cells [PDF]
Scientific ReportsTyre additives such as p-phenylenediamines (PPDs) and benzothiazoles (BTs) are ubiquitous in the environment. They have been frequently detected in urban air and have been detected in the human body.
Samuel Hyman +10 more
doaj +2 more sources
Network Toxicology and Molecular Docking to Elucidate the Mechanisms of Intestinal Toxicity Induced by P-Phenylenediamine Antioxidants and Their Quinone Derivatives [PDF]
ToxicsP-phenylenediamines (PPDs) and their quinone derivatives (PPDQs), emerging pollutants widespread in urban environments, exhibit biotoxicological risks.
Hui Zou +4 more
doaj +2 more sources
Mechanochemistry Frees Thiourea Dioxide (TDO) from the 'Veils' of Solvent, Exposing All Its Reactivity. [PDF]
Molecules, 2023 The synthesis of nitrogen-based heterocycles has always been considered essential in developing pharmaceuticals in medicine and agriculture. This explains why various synthetic approaches have been proposed in recent decades.
Basoccu F +4 more
europepmc +3 more sources
ARKIVOC, 2018 An efficient and completely greener approach has been outlined for the reaction of 3-acetyl-2 H -chromen-2- ones with o-phenylenediamines using tetrabutylammonium tribromide (TBATB) to obtain 3-(quinoxalin-2-yl)- 2 H -chromen-2-ones in one-pot ...
Kotthireddy Kavitha +3 more
doaj +2 more sources