Results 51 to 60 of about 16,892 (273)
, 2015 Diastereoselectivity in chemical reactions can arise from differences in activation energies associated with the reactants, if the process is kinetically controlled.
Sven Hackbusch +3 more
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MoleculesThe diastereoselectivity of the liquid- and vapor-phase Catalytic Transfer Hydrogenation (CTH) of cyclic ketones: x-methylcyclohexanones (x = 2, 3 or 4), 4-t-butylcyclohexanone, and bicyclic ketones: 2-norbornanone, camphor, fenchone, and a tricyclic ...
Marek Gliński +6 more
doaj +1 more source
A Chiral Saddle‐Shaped Nanographene With Two Heptagon‐Embedded [4]Helicenes
Angewandte Chemie International Edition, EarlyView.We present a novel synthetic strategy toward a chiral saddle‐shaped nanographene (cSNG) via a two‐step oxidation of a prochiral anthracene precursor. The Scholl‐type oxidation first yields a key intermediate with sp3‐defect heptagons, and subsequent oxidative dehydrogenation affords fully conjugated cSNG.
Felix Trautner +11 more
wiley +1 more source
Intra- and Intermolecular Diastereoselectivity of 5-Hydroxy-2-adamantylidene†
, 2016 Intra- and Intermolecular Diastereoselectivity of 5-Hydroxy-2-adamantylidene†
Udo H. Brinker (1470559) +1 more
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Additions to Fe(CO)3−Dienal Complexes: Dependence of Diastereoselectivity on Lewis Acid
, 2016 Lewis acid mediated additions to Fe(CO)3−2,4-dienal complexes are explored. Silyl enol ether and allylstannane nucleophiles both undergo aldehyde addition with good diastereoselectivity.
Daniel F. Harvey (3031866) +1 more
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Monovalent chiral-at-copper complexes: halide-controlled diastereoselectivity [PDF]
, 2012 An unusual example of diastereoselectivity has been observed in Cu(κ3-P,C,P′-1)X complexes where 1 is an asymmetric tridentate ligand containing a bicyclic NHC framework and X is a halide.
Newman, Paul David +2 more
core +1 more source
Beilstein Journal of Organic ChemistryA cascade inter–intramolecular double Michael strategy for the synthesis of highly functionalized cyclohexanones from curcumins and arylidenemalonates is reported. This strategy works in the presence of aqueous KOH using TBAB as a suitable phase transfer
Deepa Nair +3 more
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, 2019 Citation: 'diastereoselectivity' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.D01684 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire +1 more source
Solvent-controlled diastereoselectivity in tryptophan-catalyzed Mannich reactions [PDF]
, 2018 Solvent effects in the L-tryptophan-catalyzed Mannich reaction between hydroxyacetone and glyoxylate imines have been examined. The use of a DMSO/1-butanol (4:1 v/v) mixture as solvent at rt provided the expected Mannich adducts in good yields, high anti-
Moyano i Baldoire, Albert +2 more
core +1 more source
Predicting the Diastereoselectivity of Rh-Mediated Intramolecular C−H Insertion
, 2016 Rhodium-mediated cyclization of the α-diazo ester 1 proceeds with high diastereoselectivity, to give the trisubstituted cyclopentane 5. A computational model (ZINDO and Molecular Mechanics) based on our current mechanistic understanding of the reaction ...
Arnold L. Rheingold (1274736) +2 more
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