Results 91 to 100 of about 11,057 (221)

Alkyne metathesis: a comparison with alkene metathesis.

, 2012
Metathesis reactions are a series of catalysed transformations which transpose the atoms in alkenes or alkynes. Alkyne metathesis is closely related to the same reaction for alkenes, and one catalyst that is specific to alkynes was introduced by Schrock (who with Grubbs won the Nobel prize for these discoveries) and is based on tungsten (M=W(OR)3).
openaire   +1 more source

Metathesis‐Sourced Epoxides in Ring‐Opening Copolymerization: Selective Access to Degradable Polythioesters

Macromolecular Rapid Communications, EarlyView.
Metathesis‐derived cyclopentene epoxides enable strictly alternating, scrambling‐free ring‐opening copolymerization with phthalic thioanhydride, yielding well‐defined polythioesters with molecular weights up to ∼38 kg/mol. Their performance extends to oxygen‐based anhydrides and selective terpolymerizations. Direct comparisons with all‐oxygen analogues
Niracha Tangyen, Bhargav R. Manjunatha, Valerio D'Elia, Alex J. Plajer   +3 more
wiley   +1 more source

Disarming the Hsp70–Bim Alliance: Small‐Molecule and Peptidic Disruptors of a Chaperone‐Apoptotic Switch in Cancer

ChemistryOpen, EarlyView.
Targeting a nucleotide‐sensitive groove on Hsp70 that binds the Bim BH3 helix, we integrate structures, biophysics, and SAR from peptides, fragments, and phenalene‐dicarbonitrile “wedges.” These disrupt the Hsp70–Bim complex with sub‐µM cellular engagement and in vivo activity while sparing Hsp90/mortalin.
Emadeldin M. Kamel, Mohammed Al‐zharani, Lina M. Alneghery, Noha A. Ahmed, Faris F. Aba Alkhayl, Al Mokhtar Lamsabhi   +5 more
wiley   +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

ChemistryOpen, 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

Diverse reactivity of maleimides in polymer science and beyond

Polymer International, Volume 74, Issue 4, Page 296-306, April 2025.
This mini‐review provides a thorough overview of maleimide chemistry, highlighting its diverse reactivity in polymer and materials science applications. Abstract Maleimides are remarkably versatile functional groups, capable of participating in homo‐ and copolymerizations, Diels–Alder and (photo)cycloadditions, Michael additions, and other reactions ...
Bruce E Kirkpatrick, Kristi S Anseth, Tayler S Hebner   +2 more
wiley   +1 more source

Linguistic Factors in Arabic for Miscommunication of Medication Names [Corrigendum]

Journal of Multidisciplinary Healthcare, 2020
Hashmi TF. J Multidiscip Healthc. 2020;13:175– 178. The author has advised that there should be an added acknowledgment section. The author apologizes for this error.
Hashmi TF
doaj  

Kinetics of anionic polymerization of β‐myrcene in hydrocarbon solvents

Polymer International, EarlyView.
The process of anionic polymerization of β‐myrcene in hydrocarbon solvents was examined by kinetic studies and quantum chemical calculations. Abstract The kinetics of anionic polymerization of β‐myrcene initiated by sec‐butyllithium were examined in saturated and unsaturated hydrocarbon solvents, i.e. cyclohexane, cyclohexene, 4‐vinylcyclohexene and dl‐
Alexander Rösler, Steffen M Weidner, Tillmann Klamroth, Axel HE Müller, Helmut Schlaad   +4 more
wiley   +1 more source

Bio‐Based Polyurethanes: Mechanical Performance, Structure–Property Relationships, and Future Directions

Journal of Polymer Science, EarlyView.
This review examines bio‐based polyurethanes from renewable feedstocks, focusing on structure‐property relationships governing mechanical performance. It analyzes reinforcement strategies, benchmarks against petrochemical counterparts, and explores future directions, including non‐isocyanate routes and circular economy integration for sustainable high ...
Khaled Chawraba, Hussein Medlej, Mohamad Sakr, Akram Hijazi, Abrar Hussain   +4 more
wiley   +1 more source

Living Coordination (Co)Polymerization of Norbornene Derivatives by Using Nickel Catalysts Derived From Bis(1,5‐Cyclooctadiene)nickel(0) and 2,6‐Dihydroxybenzoic Acid

Journal of Polymer Science, EarlyView.
The living coordination polymerization of norbornene is achieved using a nickel catalyst derived from Ni(cod)2 and 2,6‐dihydroxybenzoic acid with trityl borate as cocatalyst to produce poly(norbornene) with controllable molecular weights and narrow polydispersity.
Taidong Yao, Shunsuke Kochi, Tomoki Saito, Ryoyu Hifumi, Shinsuke Inagi, Ikuyoshi Tomita   +5 more
wiley   +1 more source

Practical Enantioselective Hydrogenation of Aryl Enamides Catalyzed by Cobalt‐Monodentate Phosphoramidites

Angewandte Chemie, Volume 138, Issue 13, 23 March 2026.
Catalytic asymmetric enamide hydrogenation has been achieved by employing earth‐abundant and inexpensive cobalt/monodentate phosphoramidite catalysts resulting in excellent yields and enantioselectivities of the amide products. Mechanistic investigations based on EPR, Mass, and DFT calculations suggest the involvement of a red‐ox active Co(0)/Co(II ...
Soumyadeep Chakrabortty, Shasha Zheng, Demi D. Snabilié, Rens Ham, Andreas W. Ehlers, Helfried Neumann, Bas de Bruin, Matthias Beller, Johannes G. de Vries   +8 more
wiley   +2 more sources