Results 11 to 20 of about 39,817 (294)
Enantioselective Self-Replicators
Journal of the American Chemical Society, 2023 Self-replicating molecules provide a simple approach for investigating fundamental processes in scenarios of the emergence of life. Although homochirality is an important aspect of life and of how it emerged, the effects of chirality on self-replicators have received only little attention so far.
Yang, Shuo +5 more
openaire +3 more sources
Enantioselective semireduction of allenes [PDF]
Nature Communications, 2017 AbstractRh-hydride catalysis solves a synthetic challenge by affording the enantioselective reduction of allenes, thereby yielding access to motifs commonly used in medicinal chemistry. A designer Josiphos ligand promotes the generation of chiral benzylic isomers, when combined with a Hantzsch ester as the reductant.
Chen, Zhiwei, Dong, Vy M
openaire +6 more sources
Enantioselective Synthesis of Azamerone [PDF]
Journal of the American Chemical Society, 2018 A concise and selective synthesis of the dichlorinated meroterpenoid azamerone is described. The paucity of tactics for the synthesis of chiral organochlorides motivated the development of unique strategies for accessing these motifs in enantioenriched forms.
Matthew L. Landry +2 more
openaire +4 more sources
ChemistryOpen, 2022 Imine reductases (IREDs) are NADPH‐dependent enzymes (NADPH=nicotinamide adenine dinucleotide phosphate) that catalyze the reduction of imines to amines.
Dr. Mario Prejanò +2 more
doaj +1 more source
Nature Communications, 2023 Enantioselectivity of helical aggregation is conventionally directed either by its homochiral ingredients or by introduction of chiral catalysis. The fundamental question, then, is whether helical aggregation that consists only of achiral components can ...
Hiroki Aizawa +7 more
doaj +1 more source
Enantioselective optical gradient forces using 3D structured vortex light [PDF]
, 2021 Here we highlight enantioselective optical gradient forces present in 3D structured optical vortex tweezing systems. One chiral force originates from the circular polarization of the light, while remarkably the other is independent of the input polarization, even occurring for unpolarized light, and is not present in 2D structured light nor propagating
arxiv +1 more source
Three Dimensional Orientation of Complex Molecules Excited by Two-Color Femtosecond Pulses [PDF]
J. Phys. B: At. Mol. Opt. Phys. 54 164003 (2021), 2021 We study the excitation of asymmetric-top (including chiral) molecules by two-color femtosecond laser pulses. In the cases of non-chiral asymmetric-top molecules excited by an orthogonally polarized two-color pulse, we demonstrate, classically and quantum mechanically, three-dimensional orientation.
arxiv +1 more source
Enantioselective Synthesis of N1999A2. [PDF]
ChemInform, 2006 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.
Nan Ji +3 more
openaire +5 more sources
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
Molecules, 2019 The members of the Old Yellow Enzyme (OYE) family are capable of catalyzing the asymmetric reduction of (E/Z)-citral to (R)-citronellal—a key intermediate in the synthesis of L-menthol. The applications of OYE-mediated biotransformation are usually
Xiangxian Ying +9 more
doaj +1 more source