Results 121 to 130 of about 4,073,254 (239)

Conformational Fixation and Experimentally Guided Modeling of Excited‐State Relaxation in 3‐Morpholino Propenylidene Indolone Merocyanines

Aggregate, Volume 7, Issue 11, November 2026.
Conformational fixation of donor–acceptor merocyanines modulates excited‐state relaxation and fluorescence. Viscosity‐ and aggregation‐dependent emission, combined with TDDFT calculations, reveal a strongly twisted charge‐separated state in solution and a torsionally constrained emissive state in rigid environments, establishing a unified picture of ...
Christian Muschelknautz, Larissa Brandner, Klaus Schaper, Bernhard Mayer, Thomas J. J. Müller   +4 more
wiley   +1 more source

Diversity-oriented synthesis of analogues of the novel macrocyclic peptide FR-225497 through late stage functionalization

Beilstein Journal of Organic Chemistry, 2015
A concise synthetic approach to a class of biologically interesting cyclic tetrapeptides is reported which involves a late-stage functionalization of a macrocyclic scaffold through cross metathesis in an attempt to create diversity.
Jyotiprasad Mukherjee, Suman Sil, Shital Kumar Chattopadhyay   +2 more
doaj   +1 more source

Redox‐Active Verdazyl Radical Polymers via Postpolymerization Modification of Active Ester Polymers

ChemPlusChem, Volume 91, Issue 11, November 2026.
Organic radical polymers were synthesized via postpolymerization modification (PPM) of poly(pentafluorophenyl (meth)acrylate) with diverse 6‐oxoverdazyl stable radicals. This work servs as an electrochemical proof‐of‐concept, exhibiting a chemically reversible redox couple at 3.43 V versus Li/Li+, validating the electrochemical accessibility of the ...
Theo A. Ellingsen, James D. Randall, Bhagya Dharmasiri, Wesley J. Olivier, Luke C. Henderson, Melissa K. Stanfield, Stuart C. Thickett, Rebecca O. Fuller   +7 more
wiley   +1 more source

Controlled molecular architectures via ring opening metathesis polymerisation [PDF]

, 1995
This thesis describes studies into the ring opening metathesis polymerisation (ROMP) of some monocyclic alkenes, the living polymerisation of cyclopentene and the preparation of novel block copolymers and novel polyethylene architectures using having ...
Dounis, Panagiotis
core  

Microwave-Assisted Olefin Metathesis

, 2008
International audienceThe beneficial effect of microwave irradiation instead of classical thermal conditions in olefin metathesis reactions is illustrated through a series of literature examples of ring-closing- metathesis and cross-metathesis ...
Coquerel, Yoann, Jean Rodriguez, Rodriguez, Jean, Yoann Coquerel   +3 more
core   +1 more source

A Chemically Recyclable 1,3,5‐Triazine‐Based Epoxy Thermoset Enabled by Nucleophilic Aromatic Substitution Reaction

Macromolecular Rapid Communications, Volume 47, Issue 21, 6 November 2026.
High‐performance 1,3,5‐triazine epoxy networks are prepared via solvent‐free curing and recycled using nucleophilic aromatic substitution (SNAr) chemistry. This robust thermoset undergoes clean depolymerization into well‐defined building blocks for seamless repolymerization, achieving chemical recycling while preserving thermomechanical performance ...
Yi‐Ru Chen, Fabian Eisenreich, A. Catarina C. Esteves, Željko Tomović   +3 more
wiley   +1 more source

Diversity-Oriented Approach to Macrocyclic Cyclophane Derivatives by Suzuki-Miyaura Cross-Coupling and Olefin Metathesis as Key Steps

, 2011
Palladium-catalyzed Suzuki Miyaura (SM) cross-coupling reaction with allylboronic acid pinacol ester and titanium assisted cross-metathesis (CM)/ring-closing metathesis (RCM) cascade has been used to synthesize macrocydic cydophane ...
SHAIKH, M, KOTHA, S, Kotha, Sambasivarao, Shaikh, Mobin, Sambasivarao Kotha, Arjun S. Chavan, CHAVAN, AS, Chavan, Arjun S., Mobin Shaikh   +8 more
core   +1 more source

Theoretical Framework for Predicting Dynamic Covalent Exchange Based on Proton Affinities and Proton‐Transfer Assistance

Chemistry – A European Journal, Volume 32, Issue 40, 27 October 2026.
Proton‑transfer catalysis controls acylsemicarbazide dissociation, linking proton affinity to exchange kinetics and enabling predictive design of robust, tunable dynamic covalent networks. ABSTRACT We provide design principles for predicting bond exchange kinetics in acylsemicarbazide (ASC)‐based systems that can be applied to tuning the properties of ...
Siebe Lekanne Deprez, Stefan J. D. Maessen, Angelina N. van Dam, Celine Nieuwland, Pascal Vermeeren, Anja R. A. Palmans, Célia Fonseca Guerra   +6 more
wiley   +1 more source

Cross-Metathesis/Intramolecular (Hetero-)Michael Addition: A Convenient Sequence for the Generation of Carbo- and Heterocycles

, 2017
The high stability and functional group compatibility of ruthenium carbene complexes confer them a great ability to catalyze domino processes. For this reason, the combination of metathesis reactions with additional transformations in a domino fashion ...
Carlos del Pozo, Javier Miró, María Sánchez-Roselló   +2 more
core   +1 more source

Modular and Stereoselective Synthesis of Cyclobutane β‐Amino Alcohols

Angewandte Chemie, Volume 138, Issue 43, 19 October 2026.
Late‐stage functionalization and photoisomerization of 1,2‐azaborine leads to a general strategy for the synthesis of diversely substituted cyclobutane β‐amino alcohols. The relative stereochemistry of the resulting products is unambiguously defined by the stereospecific and stereoselective nature of the photoisomerization‐hydrogenation‐oxidation ...
Xinyu Yang, Tomoya Ozaki, Bo Li, Shih‐Yuan Liu   +3 more
wiley   +2 more sources