Results 51 to 60 of about 3,273,294 (390)
Influence of Phosphoramidites in Copper-Catalyzed Conjugate Borylation Reaction [PDF]
, 2012 Copper(I) has become the preferred metal to catalyze the β-boration of α,β-unsaturated carbonyl compounds, and now we demonstrate that easily accessible monodentate chiral ligands, such as phosphoramidites and phosphites, can be convenient alternative ...
Bonet, Amadeu, +6 more
core +4 more sources
Enantioselective [4+2] Annulation to the Concise Synthesis of Chiral Dihydrocarbazoles
iScience, 2020 Summary: A highly efficient phosphine-catalyzed enantioselective [4 + 2] annulation of allenoates with 3-nitroindoles or 3-nitrobenzothiophenes has been developed.
Haiyang Wang +3 more
doaj
Nature Communications, 2021 Chiral acetylenic derivatives are found in many bioactive compounds and are versatile building blocks in organic synthesis. Here, the authors report a mild enantioselective nickel/Lewis acid-catalyzed asymmetric propargylic substitution reaction which is
Xihao Chang +3 more
doaj +1 more source
Biologically active Phytophthora mating hormone prepared by catalytic asymmetric total synthesis [PDF]
, 2008 A Phytophthora mating hormone with an array of 1,5-stereogenic centers has been synthesized by using our recently developed methodology of catalytic enantioselective conjugate addition of Grignard reagents. We applied this methodology in a diastereo- and
A. J. Minnaard +23 more
core +4 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
Nature Communications, 2018 Catalytic enantioselective synthesis of trifluoromethylthiolated molecules remains a challenge. Here, the authors report a bifunctional selenide-catalyzed approach for the synthesis of structurally complex chiral trifluoromethylthiolated ...
Jie Luo +3 more
doaj +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 Synthesis of (−)‐10‐Hydroxyacutuminine
Angewandte Chemie International Edition, 2022 AbstractAn enantioselective synthesis of (−)‐10‐hydroxyacutuminine is reported. Central to our strategy is a photochemical [2+2] cycloaddition that forges two of the quaternary stereocenters present in the acutumine alkaloids. A subsequent retro‐aldol/Dieckmann sequence furnishes the spirocyclic cyclopentenone.
Denise C. Grünenfelder +5 more
openaire +5 more sources
Asymmetric total synthesis of yuzurimine-type Daphniphyllum alkaloid (+)-caldaphnidine J
Nature Communications, 2020 Despite being known for more than 50 years, yuzurimine-type alkaloids have not been accessed by total synthesis. Here, the authors report the first enantioselective total synthesis of (+)-Caldaphnidine J, a highly complex yuzurimine-type Daphniphyllum ...
Lian-Dong Guo +6 more
doaj +1 more source