Results 31 to 40 of about 123,983 (385)
High Ethylene and Propylene in an Area Dominated by Oil Production
Atmosphere, 2020 We measured the spatial distribution and composition of ozone-forming hydrocarbons, alcohols, and carbonyls in Utah’s Uinta Basin during the winter months of 2019 and 2020. The Uinta Basin contains about 10,000 producing oil and gas wells. Snow cover and
Seth N. Lyman +4 more
doaj +1 more source
Influence of the position of the double bond on the autoignition of linear alkenes at low temperature [PDF]
Proceedings of the Combustion Institute 32 (2009) 387-394, 2009 The influence of the position of the double bond on the autoignition...
arxiv +1 more source
Thermodynamics of adsorption of light alkanes and alkenes in single-walled carbon nanotube bundles [PDF]
Physical Review B 79, 165426, 2009, 2016 The thermodynamics of adsorption of light alkanes and alkenes (CH4, C2H6, C2H4, C3H8, and C3H6) in single-walled carbon nanotube bundles is studied by configurational-bias grand canonical Monte Carlo simulation. The bundles consist of uniform nanotubes with diameters in the range 11.0 < D (A) < 18.1, arranged in the usual close-packed hexagonal lattice.
arxiv +1 more source
A decatungstate-based Ionic liquid exhibiting very low dielectric constant suitable for acting as solvent and catalyst for oxidation of organic substrates [PDF]
, 2021 In this contribution, a new POM-based ionic liquid, namely (P6,6,6,14)4[W10O32], was fully characterized. Its viscosity and its very low dielectric constant make this hybrid ionic liquid suitable to be used as solvent for organic transformations. As proof of concept, this unique ionic liquid combining solvant and catalyst properties was tested for ...
arxiv +1 more source
Hydroxysulfonylation of alkenes: an update
RSC Advances, 2021 The direct difunctionalization of alkenes recognized as a straightforward tool for the rapid fabrication of complex molecules and pharmaceutical targets by introducing two different functional groups on adjacent carbon atoms of common alkene moieties.
Zinatossadat Hossaini +4 more
openaire +4 more sources
Cobalt-catalyzed nucleophilic addition of the allylic C(sp3)–H bond of simple alkenes to ketones
Beilstein Journal of Organic Chemistry, 2018 We herein describe a cobalt/Xantphos-catalyzed regioselective addition of simple alkenes to acetophenone derivatives, affording branched homoallylic alcohols in high yields with perfect branch selectivities.
Tsuyoshi Mita +3 more
doaj +1 more source
Molecules, 2021 A synthetic route to new heterocyclic 1,1-donor–acceptor-substituted alkenes starting with N-methyl-acridone, xanthone, and thioxanthone was investigated, leading to the acridone- and xanthone-derived products methyl 2-methoxy-2-(10-methylacridin-9 (10H)-
Tim Lippold +2 more
doaj +1 more source
Catalytic Enantioselective Addition of Alkylzirconium Reagents to Aliphatic Aldehydes
Molecules, 2021 A catalytic methodology for the enantioselective addition of alkylzirconium reagents to aliphatic aldehydes is reported here. The versatile and readily accessible chiral Ph-BINMOL ligand, in the presence of Ti(OiPr)4 and a zinc salt, facilitates the ...
Jade Vaccari +3 more
doaj +1 more source
Enantioselective Hydrocarbamoylation of Alkenes
Angewandte Chemie International Edition, 2022 AbstractThe asymmetric hydroaminocarbonylation of olefins represents a straightforward approach for the synthesis of enantioenriched amides, but is hampered by the necessity to employ CO gas, often at elevated pressures. We herein describe, as an alternative, an enantioselective hydrocarbamoylation of alkenes leveraging dual copper hydride and ...
Sheng Feng +2 more
openaire +2 more sources
Recent Advances on the Halo- and Cyano-Trifluoromethylation of Alkenes and Alkynes
Molecules, 2021 Incorporation of fluorine into organic molecules is a well-established strategy in the design of advanced materials, agrochemicals, and pharmaceuticals. Among numerous modern synthetic approaches, functionalization of unsaturated bonds with simultaneous ...
Bo Fu +8 more
doaj +1 more source