Results 251 to 260 of about 23,915 (334)

Synthesis of Poly(p‐Terphenyl N,N‐Dimethylpiperidinium)s Using Asymmetric Ketone‐Based Branching Agent

open access: yesMacromolecular Materials and Engineering, EarlyView.
4‐Biphenylyl trifluoromethyl ketone is used as an asymmetric branching agent in the synthesis of aryl ether‐free poly(p‐terphenyl‐N,N‐dimethylpiperidinium)s via optimized superacid‐catalyzed Friedel‐Crafts polyhydroxyalkylation. The resulting quaternized polymers, with varying branching degrees, show high molecular weights (∼70 kDa) as determined by ...
Ihor Tkachenko   +7 more
wiley   +1 more source

Efficient Solution‐Phase Synthesis of Sequence‐Defined Oligourethanes with Precise Chirality Control

open access: yesMacromolecular Rapid Communications, EarlyView.
A one‐pot, high‐yield strategy enables the solution‐phase synthesis of sequence‐defined, stereoregular oligourethanes using Fmoc chemistry. The resulting oligomers exhibit precise sequence and chirality control and allow post‐synthetic modification. Their structural and photophysical properties, including solvatochromism and aggregation behavior, are ...
Anuj Sharma   +2 more
wiley   +1 more source

Degradation strategies for structural characterization of insoluble synthetic polymers by mass spectrometry

open access: yesMass Spectrometry Reviews, EarlyView.
Abstract With the advent of soft ionization techniques such as electrospray (ESI) and matrix‐assisted laser desorption/ionization (MALDI) to produce intact gas‐phase ions from nonvolatile macromolecules, mass spectrometry has become an essential technique in the field of polymeric materials.
Thierry N. J. Fouquet   +2 more
wiley   +1 more source

Design, Synthesis, and Evaluation of 1-Benzylpiperidine and 1-Benzoylpiperidine Derivatives as Dual-Target Inhibitors of Acetylcholinesterase and Serotonin Transporter for Alzheimer's Disease. [PDF]

open access: yesMolecules
González-Gutiérrez JP   +12 more
europepmc   +1 more source

Navigating Solute Carrier Transporters—A Comprehensive Review of Functionalized Small Molecule Probes for Target Identification and Characterization

open access: yesMedicinal Research Reviews, EarlyView.
ABSTRACT Solute carrier transporters (SLCs) are integral membrane proteins that play pivotal roles in maintaining cellular homeostasis by mediating the transport of a diverse range of substrates across cell membranes. With their involvement in fundamental physiological processes such as nutrient uptake, neurotransmitter signaling, and drug transport ...
Majlen A. Dilweg   +3 more
wiley   +1 more source

Stereoselective cyclization of silylated epoxy aldehydes into piperidines. Effect of the silicon group

open access: yesARKIVOC, 2007
Cécile Boglio   +3 more
doaj   +1 more source

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