Enantioselective Synthesis of (+)‐Majusculone (I). [PDF]
ChemInform, 2007 AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Douglass F. Taber +2 more
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Lipase catalysed kinetic resolution of racemic 1,2-diols containing a chiral quaternary center [PDF]
, 2018 Optically active 1,2-diols are valuable buildings blocks in organic synthesis. In the present paper, a set of racemic 1,2-diols with an ester functional group are prepared, starting from -ketoesters in a three-step procedure with moderate yields.
Gonzalo Calvo, Gonzalo de
core +2 more sources
Catalytic Enantioselective Oxaziridination [PDF]
Journal of the American Chemical Society, 2011 AbstractOptically active 3‐aryl‐ or 3‐alkyl‐N‐tosyloxaziridines with exclusive trans configuration are obtained from the corresponding aldimines by oxidation with MCPBA in the presence of a cinchona alkaloid‐derived catalyst.
Lykke, Lennart +2 more
openaire +5 more sources
All-optical coherent control of chiral electronic transitions for highly enantioselective photochemistry [PDF]
arXiv, 2023 Enantioselective photochemistry provides access to unique molecular structures and functions, with deep implications for fundamental science and industrial applications. Current methods for highly enantioselective photochemistry critically rely on chiral sensitisers, as circularly polarised light on its own yields vanishingly weak enantioselectivity ...
arxiv
Spontaneous Mirror Symmetry Breaking in the Limited Enantioselective Autocatalysis Model: Abyssal Hydrothermal Vents as Scenario for the Emergence of Chirality in Prebiotic Chemistry [PDF]
Astrobiology, Volume 13, Number 2, 2013, 2013 The emergence of chirality in enantioselective autocatalysis for compounds unable to transform according to the Frank-like reaction network is discussed with respect to the controversial limited enantioselectivity (LES) model composed of coupled enantioselective and non-enantioselective autocatalyses.
arxiv +1 more source
Polarized radiation and the Emergence of Biological Homochirality on Earth and Beyond [PDF]
, 2021 It has been proposed that spin-polarized cosmic radiation can induce asymmetric changes in helical biopolymers that may account for the emergence of biological homochirality. The parity violation in the weak interaction has direct consequences on the transport of polarization in cosmic ray showers.
arxiv +1 more source
Enantioselective hydrogenation of activated ketones in the presence of Pt–cinchona catalysts. Is the proton transfer concept valid? [PDF]
, 2014 Experimental evidences related to the proton transfer in the catalytic system Pt-Cinchona alkaloids for enantioselective hydrogenation of activated ketones were collected and analyzed.
Margitfalvi, József L., Tálas, Emília
core +1 more source
Enantioselective switch on radiations of dissipative chiral molecules [PDF]
arXiv, 2022 Enantiodetection is an important and challenging task across natural science. Nowadays, some chiroptical methods of enantiodetection based on decoherence-free cyclic three-level models of chiral molecules can reach the ultimate limit of the enantioselectivities in the molecular responses.
arxiv
Enantioselective Orientation of Chiral Molecules Induced by Terahertz Pulses with Twisted Polarization [PDF]
Phys. Rev. Research 3, 013249 (2021), 2020 Chirality and chiral molecules are key elements in modern chemical and biochemical industries. Individual addressing, and the eventual separation of chiral enantiomers has been and still is an important elusive task in molecular physics and chemistry, and a variety of methods has been introduced over the years to achieve this goal.
arxiv +1 more source
Asymmetric phase-transfer-catalyzed synthesis of five-membered cyclic gamma-Amino acid precursors [PDF]
, 2010 The first example of an intramolecular enantioselective Michael addition of nitronates onto conjugated systems utilizing a chiral phase-transfer catalyst is described.
Cobb, Alexander John Andre +3 more
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