Results 121 to 130 of about 31,425 (239)

Silylative Kinetic Resolution of Acyclic Secondary Benzylic Alcohols Catalyzed by Chiral Guanidine Having Axial Chirality Containing a Methoxy Group

open access: yesChinese Journal of Chemistry, Volume 43, Issue 13, Page 1553-1559, 1 July 2025.
An efficient silylative kinetic resolution of acyclic secondary benzylic alcohols was achieved using chlorosilanes and new axially chiral guanidine catalysts bearing a methoxy group. Comprehensive Summary New chiral guanidine catalysts having axial chirality containing a methoxy group were synthesized. Subsequently, their catalytic ability was examined
Yuki Homma, Takahisa Ikeue, Kenya Nakata
wiley   +1 more source

Asymmetric Synthesis of Secondary Alcohols and 1,2-Disubstituted Epoxides via Organocatalytic Sulfenylation [PDF]

open access: yes, 2015
Enantioenriched secondary alcohols can be prepared via a short reaction sequence involving asymmetric organocatalytic sulfenylation of an aldehyde, organometallic addition, and desulfurization.
Benhamou, L, Rota, F, Sheppard, T
core   +2 more sources

One-pot asymmetric cyclocarbohydroxylation sequence for the enantioselective synthesis of functionalised cyclopentanes

open access: yes, 2010
International audienceA new method has been developed for the enantioselective synthesis of highly functionalised cyclopentanes bearing up to three stereogenic centres with very high stereoselectivity.
Bonne, Damien   +4 more
core   +3 more sources

Development and application of asymmetric organocatalytic Mukaiyama and vinylogous Mukaiyama-type reactions [PDF]

open access: yes, 2018
This is the peer reviewed version of the following article: "Development and application of asymmetric organocatalytic Mukaiyama and vinylogous Mukaiyama-type reactions", Chemistry - A European Journal 24.43 (2018): 10906-10933 ,which has been published ...
Alemán, José   +6 more
core   +1 more source

On Spatial Asymmetric Games [PDF]

open access: yesarXiv, 2002
The stability of some spatial asymmeric games is discussed. Both linear and nonlinear asymptotic stability of asymmetric hawk-dove and prisoner's dilemma are studied. Telegraph reaction diffusion equations for the asymmetric spatial games are presented.
arxiv  

Catalytic asymmetric synthesis of biologically important 3-hydroxyoxindoles: an update

open access: yesBeilstein Journal of Organic Chemistry, 2016
Oxindole scaffolds are prevalent in natural products and have been recognized as privileged substructures in new drug discovery. Several oxindole-containing compounds have advanced into clinical trials for the treatment of different diseases. Among these
Bin Yu   +3 more
doaj   +1 more source

(S)- and (R)-5-Pyrrolidin-2-yl-1H-tetrazoles: Enantiomeric Organocatalysts of Broad Utility in Organic Synthesis

open access: yesCHIMIA, 2007
This mini-review concerns the broad application of (S)- and (R)-5-pyrrolidin-2-yl-1H-tetrazoles as organocatalysts. A summary of methods for their synthesis is followed by a discussion of the general reaction mechanism and subsequent analysis of
Deborah A. Longbottom   +2 more
doaj   +1 more source

Cinchona-Derived Picolinamides: Effective Organocatalysts for Stereoselective Imine Hydrosilylation [PDF]

open access: yes, 2014
Picolinamide-cinchona organocatalysts for the successful enantioselective reduction of ketomines were developed. For the first time, a new type of chiral Lewis base, a cationic species, is reported to efficiently organocatalyze the addition of ...
Andrea, Genoni   +3 more
core   +1 more source

Hydrazones as C-Nucleophiles in Asymmetric Organocatalysis

open access: yes, 2021
In this PhD Thesis, novel catalytic processes and methodologies for the asymmetric functionalization of prochiral substrates (neutral or ionic) employing hydrazones as versatile umpolung reagents have been developed. In general, double H-bond donors organocatalysts based on unnatural amino acids provided good reactivities and suitable chiral ...
openaire   +2 more sources

Designing Enzymatic Reactivity with an Expanded Palette

open access: yesChemBioChem, Volume 26, Issue 11, June 3, 2025.
Innovation in biocatalysis is rapidly increasingly the diversity of catalytic reactivity that can be mediated by enzymes, addressing a key bottleneck for their widespread adoption in industrial chemical synthesis. A key approach to this is building enzymes with unnatural catalytic components that provide an expanded palette with new possibilities for ...
Reuben B. Leveson‐Gower
wiley   +1 more source

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