Results 11 to 20 of about 76,323 (380)

Carbon dioxide-based facile synthesis of cyclic carbamates from amino alcohols. [PDF]

Chemical Communications, 2018
We report herein a straightforward general method for the synthesis of cyclic carbamates from amino alcohols and carbon dioxide in the presence of an external base and a hydroxyl group activating reagent.
T. Niemi, Israel Fernández, Bethany Steadman, Jere K. Mannisto, T. Repo   +4 more
semanticscholar   +3 more sources

The Buzz on Insecticides: A Review of Uses, Molecular Structures, Targets, Adverse Effects, and Alternatives

Molecules, 2023
Insecticides play a critical role in controlling the spread of insect-borne diseases and preserving crop health. These chemical substances are specifically formulated to kill or manage insect populations.
Maria F. Araújo, Elisabete M. S. Castanheira, Sérgio F. Sousa   +2 more
doaj   +1 more source

Modeling of Isocyanate Synthesis by the Thermal Decomposition of Carbamates

Computation, 2020
The presented work is devoted to isocyanate synthesis by the thermal decomposition of carbamates model. The work describes the existing isocyanate-obtaining processes and the main problems in the study of isocyanate synthesis by the thermal decomposition
Ratmir Dashkin, Georgii Kolesnikov, Pavel Tsygankov, Igor Lebedev, Artem Lebedev, Natalia Menshutina, Khusrav Ghafurov, Abakar Bagomedov   +7 more
doaj   +1 more source

Dithiocarbamates: Properties, Methodological Approaches and Challenges to Their Control

Toxics, 2023
Dithiocarbamates (DTCs) are a group of chemicals used primarily as fungicides, although they are exploited for various other applications. DTCs represent one of the oldest classes of broad-spectrum fungicides employed worldwide to control fungal diseases
Claudia Campanale, Mariangela Triozzi, Annamaria Ragonese, Daniela Losacco, Carmine Massarelli   +4 more
doaj   +1 more source

New Carbamates and Ureas: Comparative Ability to Gel Organic Solvents

Gels, 2022
Two series of novel amphiphilic compounds were synthesized based on carbamates and ureas structures, using a modification of the synthesis methods reported by bibliography. The compounds were tested for organic solvent removal in a model wastewater.
Gabriela Martínez-Mejía, Brenda Afrodita Bermeo-Solórzano, Silvia González, José Manuel del Río, Mónica Corea, Rogelio Jiménez-Juárez   +5 more
doaj   +1 more source

Transition Metal-Free Synthesis of Carbamates Using CO2 as the Carbon Source.

ChemSusChem, 2020
Utilization of carbon dioxide as a C1 synthon is highly attractive for the synthesis of valuable chemicals. However, activation of CO2 is highly challenging, owing to its thermodynamic stability and kinetic inertness.
Waldemar Schilling, Shoubhik Das
semanticscholar   +1 more source

Screening of Carbamate and Organophosphate Pesticides in Food Matrices Using an Affordable and Simple Spectrophotometric Acetylcholinesterase Assay

Applied Sciences, 2020
Carbamates (CMs) and organophosphates (OPs) are widely used pesticides with known neurotoxicity arising from the inhibition of acetylcholinesterase (AChE).
Aristeidis S. Tsagkaris, Leos Uttl, Jana Pulkrabova, Jana Hajslova   +3 more
doaj   +1 more source

Synthesis of Amide Enol Carbamates and Carbonates through Cu(OTf)2-Catalyzed Reaction of Ynamides with t-Butyl Carbamates/Carbonates.

Journal of Organic Chemistry, 2020
A highly regioselective approach to access amide enol carbamates and carbonates 5a-5c', 7a-7h and 9 was developed through Cu(OTf)2 catalyzed reactions of ynamides 4 with t-butyl carbamates 2, 8 and t-butyl carbonates 6.
Pan Han, Zhuo-Ya Mao, Ming Li, Changmei Si, Bangguo Wei, G. Lin   +5 more
semanticscholar   +1 more source

New N,N-dimethylcarbamate inhibitors of acetylcholinesterase: design synthesis and biological evaluation [PDF]

, 2016
A series of N,N-dimethylcarbamates containing a N,N-dibenzylamino moiety was synthesized and tested to evaluate their ability to inhibit Acetylcholinesterase (AChE).
Chiarotto, Isabella, Costi, Roberta, DE VITA, Daniela, DI SANTO, Roberto, Feroci, Marta, Ornano, Luigi, Pandolfi, Fabiana, Pepi, Federico, Scipione, Luigi, Sileno, Ilaria   +9 more
core   +1 more source

QSTR Modeling to Find Relevant DFT Descriptors Related to the Toxicity of Carbamates

Molecules, 2022
Compounds containing carbamate moieties and their derivatives can generate serious public health threats and environmental problems due their high potential toxicity.
Emma H. Acosta-Jiménez, Luis A. Zárate-Hernández, Rosa L. Camacho-Mendoza, Simplicio González-Montiel, José G. Alvarado-Rodríguez, Carlos Z. Gómez-Castro, Miriam Pescador-Rojas, Amilcar Meneses-Viveros, Julián Cruz-Borbolla   +8 more
doaj   +1 more source