Results 111 to 120 of about 36,836 (288)

Molecular Structures of Enantiomerically-Pure (S)-2-(Triphenylsilyl)- and (S)-2-(Methyldiphenylsilyl)pyrrolidinium Salts

open access: yesInorganics, 2017
Silyl-substituted pyrrolidines have gained increased interest for the design of new catalyst scaffolds. The molecular structures of four enantiomerically-pure 2-silylpyrrolidinium salts are reported.
Jonathan O. Bauer, Carsten Strohmann
doaj   +1 more source

2,3‐Dichloro‐5,6‐Dicyano‐1,4‐Benzoquinone (DDQ)‐Mediated CC Bond Formation: Redox Strategies from Stoichiometric to Catalytic Systems

open access: yesChemistryOpen, EarlyView.
2,3‐Dichloro‐5,6‐dicyano‐1,4‐benzoquinone serves as a versatile oxidant and redox catalyst for CC bond formation through hydride abstraction or single‐electron transfer. Stoichiometric and catalytic systems enable benzylic, allylic, and aromatic CH activation under mild, metal‐free conditions, providing sustainable routes to complex and bioactive ...
Dohoon Cha, Sun‐Joon Min
wiley   +1 more source

Metal-mediated intramolecular hydroamination and hydro(acy)alkoxylation reactions [PDF]

open access: yes, 2012
This PhD thesis describes work undertaken to effect asymmetric catalysis in hydroamination and hydro(acy)alkoxylation reactions of allenes. The introductory Chapter provides an overview of recent advances in asymmetric heterofunctionalisation reactions ...
Arbour, Jannine Louise   +1 more
core   +1 more source

Facial Regioselective Synthesis of Novel Bioactive Spiropyrrolidine/Pyrrolizine-Oxindole Derivatives via a Three Components Reaction as Potential Antimicrobial Agents

open access: yesMolecules, 2017
This article presents the synthesis of new derivatives of spirooxindole-spiropiperidinone- pyrrolidines 6a–j and spirooxindole-spiropiperidinone-pyrrolizines 8a–j, through a 1,3-dipolar cycloaddition reaction of azomethineylides generated from isatin ...
Huwaida M. E. Hassaneen   +4 more
doaj   +1 more source

Structural Modeling and Dynamics of the Full‐Length Homer1 Multimer

open access: yesProteins: Structure, Function, and Bioinformatics, EarlyView.
ABSTRACT Homer proteins are modular scaffold molecules that constitute an integral part of the protein network within the postsynaptic density. Full‐length Homer1 forms a large homotetramer via a long coiled coil region, and can interact with proline‐rich target sequences with its globular EVH1 domain.
Zsófia E. Kálmán   +9 more
wiley   +1 more source

Iodoaminations of alkenes [PDF]

open access: yes, 2016
The activation of alkenes and their subsequent functionalization is a frequently used methodology in synthetic chemistry. This review highlights recent iodine-mediated aminations and elaborates on the various strategies to bring about regio- or ...
Mizar, Pushpak, Wirth, Thomas
core   +1 more source

The continuing significance of chiral agrochemicals

open access: yesPest Management Science, Volume 81, Issue 4, Page 1697-1716, April 2025.
In the time frame 2018–2023, around 43% of the 35 chiral agrochemicals introduced to the market (herbicides, fungicides, insecticides, acaricides, and nematicides) contain one or more stereogenic centers in the molecule, and almost 69% of them have been marketed as racemic mixtures of enantiomers or stereoisomers.
Peter Jeschke
wiley   +1 more source

Five-membered iminocyclitol a-glucosidase inhibitors: Synthetic,biological screening and in silico studies [PDF]

open access: yes, 2013
The design and synthesis of a small library of pyrrolidine iminocyclitol inhibitors with a structural similarity to 1,4-dideoxy-1,4-imino-D-arabitol (DAB-1) is reported.
Burke, A J   +7 more
core   +1 more source

A Radical Cascade with Double Intramolecular Hydrogen Atom Transfer for the Generation of Bisfunctionalized Cyclopentanes from Linear Alkynes

open access: yesAngewandte Chemie, Volume 138, Issue 5, 28 January 2026.
A radical cascade process involving the activation of two aliphatic C–H bonds in a series of five elementary steps converts readily available terminal alkynes into functionalized cyclopentylmethyl arylsulfones. The methodology delivers flexible synthetic intermediates and was applied to the preparation of diquinanes and triquinanes possessing a rare ...
Lise Benoist   +4 more
wiley   +2 more sources

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