Results 1 to 10 of about 220,378 (310)

Synthesis of Unsymmetrical Urea Derivatives via PhI(OAc)₂ and Application in Late-Stage Drug Functionalization

Molecules
Unsymmetrical urea derivatives are essential structural motifs in a wide array of biologically significant compounds. Despite the well-established methods for synthesizing symmetrical ureas, efficient strategies for the synthesis of unsymmetrical urea ...
Subban Kathiravan, Prakriti Dhillon, Tianshu Zhang, Ian A. Nicholls   +3 more
doaj   +1 more source

Chemical Composition of Aerosol over the Arctic Ocean from Summer ARctic EXpedition (AREX) 2011–2012 Cruises: Ions, Amines, Elemental Carbon, Organic Matter, Polycyclic Aromatic Hydrocarbons, n-Alkanes, Metals, and Rare Earth Elements

Atmosphere, 2019
During the summers of 2011 and 2012, two scientific cruises were carried out over the Arctic Ocean aiming at the determination of the aerosol chemical composition in this pristine environment.
Luca Ferrero, Giorgia Sangiorgi, Maria Grazia Perrone, Cristiana Rizzi, Marco Cataldi, Piotr Markuszewski, Paulina Pakszys, Przemysław Makuch, Tomasz Petelski, Silvia Becagli, Rita Traversi, Ezio Bolzacchini, Tymon Zielinski   +12 more
doaj   +1 more source

Synthesis of new Bis- and Tetra-Acridines

Molecules, 2001
A new series of bis- and tetra-acridines has been prepared from 4-(bromomethyl) acridine; some of them exhibited encouraging in vitro cytotoxic activities against murine cell lines.
Jean-Pierre Galy, Valérie Pique, Stéphane Mazoyer, Valérie Sourdon   +3 more
doaj   +1 more source

Several Crystalline Products of Carbon Dioxide Capture by Use of Amine Reagents

Chemistry
With the growing concern over increased carbon dioxide concentrations in our planet’s atmosphere, much research is being devoted to improving the methods of carbon capture and storage. Amine-based carbon capture techniques are advantageous due to amine’s
Victoria Sena, Marina S. Fonari, Tatiana V. Timofeeva   +2 more
doaj   +1 more source

The Fluorescent Sensing of BF₃ and Amines: A Dual Approach with Hydrazone Ligands

Sensors
BF3, volatile amines (VOAs), and biogenic amines (BAs) are the key indicators in chemical reaction catalysis and food quality monitoring. In this study, we present two types of fluorescent sensors, a hydrazone ligand (HL)-based fluorescent sensor for BF3
Haichao Ye, Liqin Liu, Dagang Shen, Chang Song, Huanhuan Wang   +4 more
doaj   +1 more source

Spectroscopic and Quantum Chemical Evidence of Amine–CO₂ and Alcohol–CO₂ Interactions: Confirming an Intriguing Affinity of CO₂ to Monoethanolamine (MEA)

Molecules
A recent broadband rotational spectroscopic investigation of the cross-association mechanisms of CO2 with monoethanolamine (MEA) in molecular beams [F. Xie et al., Angew. Chem. Int. Ed., 2023, 62, e202218539] revealed an intriguing affinity of CO2 to the
Sahar Hafizi Yazdabadi, Dmytro Mihrin, Karen Louise Feilberg, René Wugt Larsen   +3 more
doaj   +1 more source

Metal‐Free Synthesis of 1,3‐Divinylimidazolidin‐2‐One

ChemistryOpen
A new one‐pot synthesis of 1,3‐divinylimidazolidin‐2‐one (DVI) starting from cheap and commercially available substances, i.e., di(chloroethyl)amine and phosgene or triphosgene was developed.
Sabine Lorenzen, Roland Graf, Nikolai V. Ignat’ev, Michael Schulte, Axel Delp, Fabio Calo, Maik Finze   +6 more
doaj   +1 more source

Vinylation of Alcohols, Thiols, and Nitrogen Compounds Using a Stoichiometric Amount of In Situ Generated Acetylene

Organics
In this work, we developed a highly efficient and versatile environmentally benign methodology for the vinylation of a broad scope of substances, including alcohols, thiols, and nitrogen compounds.
Maria S. Ledovskaya, Vladimir V. Voronin, Anna A. Reznichenko, Ekaterina A. Reznichenko   +3 more
doaj   +1 more source

Editorial: Origin and evolution of hepatitis viruses, volume II

Frontiers in Microbiology, 2023
Avik Biswas, Sibnarayan Datta
doaj   +1 more source

New Insights Into Electron Impact Mass Spectral Fragmentation of Restricted Aromatic Amines. [PDF]

J Mass Spectrom
Dewani R, Rasheed M, Ahmed F, Pervez MK.
europepmc   +1 more source