Results 121 to 130 of about 11,464 (289)

Photolytic Hydrophosphination: Insights Into Catalyzed and Uncatalyzed Processes

open access: yesChemistry – A European Journal, EarlyView.
Catalyst‐free photolytic hydrophosphination is demonstrated for vinyl arenes and activated alkenes in polar protic (alcohol) solvents. These reactions appear to be closed‐shell, affirming that even ambient light can impact a reaction—a potentially broad influence on even mundane reactions.
Emma J. Finfer   +2 more
wiley   +1 more source

Polar Aprotic Solvents Disrupt Interblock Hydrogen Bonding and Induce Microphase Separation in Double Hydrophilic Block Copolymers of PEGMA and PAAMPSA

open access: yes, 2016
Polar Aprotic Solvents Disrupt Interblock Hydrogen Bonding and Induce Microphase Separation in Double Hydrophilic Block Copolymers of PEGMA and ...
Yueh-Lin (Lynn) Loo (2433781)   +1 more
core   +1 more source

Solvent Effects on the Conformational Preferences of 2,6‐Pyridylcarboxamide Foldamers

open access: yesChemistry – A European Journal, EarlyView.
The marked effect of organic solvents and water/methanol mixtures on the conformational preferences of a soluble chiral foldamer has been established in a diverse array of seventeen distinct environments. ABSTRACT The marked influence of organic solvents and water on the conformational preferences of a chiral, soluble 2,6‐pyridylcarboxamide foldamer ...
Alexander R. Davis   +5 more
wiley   +1 more source

Assessing Benzene Dimer Interactions in Solution With a Molecular Balance

open access: yesChemistry – A European Journal, EarlyView.
The Gecko in the ToC was generated with Canva (31.03.2025 11:00 pm), the remaining graphics by the authors. ABSTRACT We present a combined experimental and computational study of a 1,4/1,6‐dibenzyl substituted cyclooctatetraene (COT)‐based molecular balance as a model to assess the benzene dimer interactions in solution.
Marvin H. J. Domanski   +4 more
wiley   +1 more source

Flipping the Card With Enantiodivergent Organocatalysis

open access: yesChemistry – A European Journal, EarlyView.
This minireview elaborates on recent organocatalytic strategies for achieving enantiodivergence—the ability to access both product enantiomers using a single chiral catalyst. It highlights how achiral stimuli, such as solvent polarity and chemical additives, along with minimal catalyst modifications, trigger stereochemical inversions in reactions ...
Debora Iapadre   +3 more
wiley   +1 more source

Radical anions of substituted nitro- and dinitrobenzenes

open access: yesТонкие химические технологии, 2007
This article presents the results obtained by means of polarographic investigation and EPR spectra in a series of substituted nitro- and meta-dinitrobenzenes in aprotic solvents.
V. M. Kazakova, N. E. Minina
doaj  

Late‐Stage Modification of Halotryptophan‐Containing Peptides Via Negishi Cross‐Coupling

open access: yesChemistry – A European Journal, EarlyView.
Negishi cross‐coupling provides access to the late‐stage functionalization of bromotryptophan‐containing peptides under comparatively mild conditions and is applicable to a range of peptide substrates in the investigated model systems. The examined alkyl iodides and variation of N‐terminal residues demonstrate the feasibility of the transformation in a
Laura Cerveson   +2 more
wiley   +1 more source

Kinetics and Mechanisms of Organic Reactions in Liquid Ammonia

open access: yes
The rate constants for the reactions of a variety of nucleophiles reacting with substituted benzyl chlorides in liquid ammonia (LNH3) have been determined.
Ji, Pengju
core  

Ultrafast Excited-State Dynamics of Hydrogen-Bonded Cytosine Microsolvated Clusters with Protic and Aprotic Polar Solvents

open access: yes, 2018
Microsolvation effects on the ultrafast excited-state deactivation dynamics of cytosine (Cy) were studied in hydrogen-bonded Cy clusters with protic and aprotic solvents using mass-resolved femtosecond pump–probe ionization spectroscopy.
Hung-Chien Yen   +17 more
core   +1 more source

Organocatalytic Formal (3+2+1)‐Cycloaddition of Allenoates, Michael Acceptors, and Carbaldehydes

open access: yesChemistry – A European Journal, EarlyView.
The use of secondary amine Lewis base organocatalysts allows for the unprecedented activation of allenoates for formal (3+2+1)‐cycloadditions with Michael acceptors and aromatic carbaldehydes. ABSTRACT Employing secondary amines as covalently interacting Lewis basic organocatalysts allows for the activation of electron‐deficient allenes (allenoates ...
David Naderer   +5 more
wiley   +1 more source

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