Results 101 to 110 of about 18,824 (297)

Versatile Palladium‐Catalyzed C‐H Arylation of Fluoroarenes with 2‐Chloropyridine Derivatives

Chemistry – A European Journal, EarlyView.
Direct C─H arylation of fluoroarenes with 2‐chloropyridines is enabled by a simple Pd/SPhos system in isopropyl acetate. The method uses inexpensive reactants and shows broad scope and high yields. DFT computations explain reactivity and selectivity.
Federico Belnome, Péter P. Fehér, András Stirling, Csongor G. Németh, Tamás Hergert, György M. Keserű, Péter Ábrányi‐Balogh   +6 more
wiley   +1 more source

Enantioselective Rh-Catalyzed Hydrogenation of Enol Acetates and Enol Carbamates with Monodentate Phosphoramidites

, 2016
Monodentate phosphoramidites, in particular PipPhos and its octahydro analogue, are excellent ligands for the rhodium-catalyzed asymmetric hydrogenation of aromatic enol acetates, enol carbamates, and 2-dienol carbamates up to 98% ee.
Ben L. Feringa (1429174), Adriaan J. Minnaard (1660111), Johannes G. de Vries (1583353), Lavinia Panella (2649010)   +3 more
core   +2 more sources

Improved Synthesis of Unsymmetrical Ureas via Carbamates

SynOpen, 2023
Ramteke Prachi, Dinesh Kumar Tanwar, Manjinder Singh Gill   +2 more
doaj   +1 more source

Trends and Perspectives in Immunosensors for Determination of Currently-Used Pesticides: The Case of Glyphosate, Organophosphates, and Neonicotinoids

Biosensors, 2019
Pesticides, due to their intensive use and their peculiar chemical features, can persist in the environment and enter the trophic chain, thus representing an environmental risk for the ecosystems and human health.
Eduardo C. Reynoso, Eduardo Torres, Francesca Bettazzi, Ilaria Palchetti   +3 more
doaj   +1 more source

Oxidation of cyclic ene-carbamates with Oxone

Cyclic ene-carbamates, from 4-membered to 8-membered, were submitted to metal-catalyst-free oxidation using Oxone, a stable and nonpollutant oxidizing reagent.
G. Nasta, M. Pallavicini, M. Sipala, A. Giraudo, C. Bolchi   +4 more
core   +1 more source

Release of thiurams and carbamates from rubber gloves

, 1993
A method for quantitative determination of thiuram and carbamate derivatives released From rubber gloves into synthetic sweat is presented, The analysis was based upon determination of ester derivatives using gas-Chromatography/mass spectrometry and ...
Knudsen, B.B., Larsen, E., Menné, T., Egsgaard, H.   +3 more
core   +1 more source

Substituent‐Controlled Ring Opening of 1‐Substituted Benzocyclobutenes: Electronic Structure and Diradical Character of Ortho‐Quinodimethane Intermediates

Chemistry – A European Journal, EarlyView.
Experimental and computational studies elucidate how the electronic nature of substituents controls the ring‐opening temperature and diradical character of 1‐substituted benzocyclobutenes, enabling the rational design of o‐quinodimethane‐based synthetic transformations.
Magali Dallegre, Imen Abid, Roselyne Rosas, Maxime Dousset, Gaëlle Chouraqui, Laurent Commeiras, Didier Siri, Didier Gigmes, Anthony Kermagoret   +8 more
wiley   +1 more source

A practical route to tertiary diarylmethylamides or -carbamates from imines, organozinc reagents and acyl chlorides or chloroformates

Beilstein Journal of Organic Chemistry, 2011
A practical route to tertiary diarylmethylamides or -carbamates from imines, organozinc reagents and acyl chlorides or chloroformates is described. This route involves the formation of an imine, which is used without isolation, followed by its activation
Erwan Le Gall, Antoine Pignon, Thierry Martens   +2 more
doaj   +1 more source

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

Chemistry – A European Journal, EarlyView.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis, Kyriakos D. Nikopoulos, Ioannis N. Lykakis   +2 more
wiley   +1 more source

Chromatography-free synthesis of carbamates from CO2 catalyzed by a green and recyclable biobased ionic liquid/Cu2O system

Journal of CO2 Utilization
Carbamates and related derivatives are crucial skeletons for pesticide design and pharmaceutical chemistry. Recently, a synthetic route for the production of carbamates has drawn great attention, which assembles the economical, renewable and non-toxic ...
Yanyan Gong, Yuankun Wang, Peng Li, Ye Yuan, Fangong Kong   +4 more
doaj   +1 more source