Results 141 to 150 of about 938,190 (242)
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 +6 more
wiley +1 more source
Dual Activity of Grubbs-Type Catalyst in the Transvinylation of Carboxylic Acids and Ring-Closing Metathesis Reactions. [PDF]
J Org Chem, 2020 Brodzka A, Koszelewski D, Ostaszewski R.
europepmc +1 more source
, 2016 Catalyzed by the first-generation Grubbs’ ruthenium complex, tandem intramolecular/intermolecular metathesis of 1,6-enynes bearing a cyclopropene ring took place smoothly to produce 3-pyrroline derivatives in satisfactory yields via ring-opening/ring ...
Min Shi (141075), Zhi-Bin Zhu (2231500)
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Chemistry – A European Journal, Volume 32, Issue 40, 27 October 2026.Five heteroleptic iridium(III) complexes bearing cyclometalated 2,4‐diphenylpyridinato ligands were synthesized and their electrochemiluminescence (ECL) investigated. Two different coreactants were evaluated: tri‐n‐propylamine and benzoyl peroxide under anodic and cathodic potentials, respectively.
Ovini Jayawardana +6 more
wiley +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 +3 more
wiley +2 more sources
Synthetic Strategies for the Construction of Cyclobutane‐Fused Heterocycles
European Journal of Organic Chemistry, Volume 29, Issue 40, 27 October 2026.Cyclobutane‐fused heterocycles are important motifs commonly present in bioactive compounds, recognized for their rigid 3D structures that confer unique properties. However, synthesizing these compounds remains challenging. This review discusses current methods for their synthesis, such as photochemical, metal‐catalyzed, and Lewis acid‐mediated [2 + 2]
Michela Vargiu +2 more
wiley +1 more source
Orchestrating Anion–π+ Interactions to Accelerate Metal‐Free Room‐Temperature Phosphorescence
Angewandte Chemie, Volume 138, Issue 43, 19 October 2026.Tuning anion–π+ interactions in pyridinium iodide contact ion pairs enables ultrafast metal‐free room‐temperature phosphorescence (540–605 nm) with radiative rates up to 5.2×105 s−1. Strong iodide→π+ charge‐transfer coupling, enhanced spin–orbit interactions, and dynamic ion‐pair organization accelerate intersystem crossing and emission, establishing ...
Eetu Hakkarainen +12 more
wiley +2 more sources
Ring-closing metathesis of prochiral oxaenediynes to racemic 4-alkenyl-2-alkynyl-3,6-dihydro-2H-pyrans. [PDF]
Beilstein J Org Chem, 2020 Kolaříková V +3 more
europepmc +1 more source
, 2002 The cyclohexenone (+)-2, readily obtained from (−)-alpha-pinene 1 was elaborated to (+)-3 in an attempt to construct the AB rings of taxoids employing the ring-closure metathesis (RCM) reaction as the key step.
Nandakumar, Jayakrishnan +1 more
core
Angewandte Chemie, Volume 138, Issue 43, 19 October 2026.The successful extension of the nickel‐catalyzed asymmetric coupling of polarized 1,3‐dienes with aldehydes to an intramolecular setting opens an efficient new entry into hydroxylated N‐heterocyclic compounds, most notably valuable tetrahydroisoquinolines.
Thilo Bender +3 more
wiley +2 more sources