Results 71 to 80 of about 140,419 (292)

Non-K Region Disubstituted Pyrenes (1,3-, 1,6- and 1,8-) by (Hetero)Aryl Groups—Review

Molecules, 2019
Disubstituted pyrenes at the non-K region by the same or different (hetero)aryl groups have proven to be an increasingly interesting area of research for scientists over the last decade due to their optical and photophysical properties.
Dawid Zych
doaj   +1 more source

Electrochemical Synthesis of Isoxazoles and Isoxazolines via Anodic Oxidation of Oximes

ChemElectroChem, 2023
Isoxazol(in)es are widely featured structural motifs in natural products, agrochemicals, and pharmaceuticals. The first intermolecular approach for a direct electrochemical synthesis from readily available aldoximes is reported.
Silja Hofmann, Johannes Winter, Tobias Prenzel, Dr. María deJesús Gálvez‐Vázquez, Prof. Dr. Siegfried R. Waldvogel   +4 more
doaj   +1 more source

Deciphering a New Electrolyte Formulation for Intelligent Modulation of Thermal Runaway to Improve the Safety of Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
Diels‐Alder clicks chemistry addresses thermal runaway in lithium‐ion batteries. A thermoresponsive electrolyte with lithium salt in vinylene carbonate (VC) and 2,5‐dimethylfuran (DMFu) operates at room temperature but undergoes Diels‐Alder reactions at high temperatures, enabling a two‐step safety mechanism: a warning phase at ≈100 °C and complete ...
Arnab Ghosh, Sunan Tian, Mingyang Zhang, Isaac Lorero Gómez, Qi Chen, Monsur Islam, Bhavika Bhatia, Silvia González Prolongo, Bimlesh Lochab, De‐Yi Wang   +9 more
wiley   +1 more source

Coordinatively unsaturated ruthenium complexes as efficient alkyne-azide cycloaddition catalysts [PDF]

, 2012
The performance of 16-electron ruthenium complexes with the general formula Cp*Ru(L)X (in which L = phosphine or N-heterocyclic carbene ligand; X = Cl or OCH2CF3) was explored in azide−alkyne cycloaddition reactions that afford the 1,2,3- triazole ...
Broggi, Julie, Cavallo, Luigi, Fortman, George C., Lamberti, Marina, Nolan, Steven P., Poater, Albert, Slawin, Alexandra M. Z.   +6 more
core   +2 more sources

Application of chiral 2-isoxazoline for the synthesis of syn-1,3-diol analogs

Beilstein Journal of Organic Chemistry, 2019
The asymmetric cycloaddition of TIPS nitronate catalyzed by “Cu(II)-bisoxazoline” gave the 2-isoxazoline product in 95% yield, which was converted into tert-butyl (3S,5R)-6-hydroxy-3,5-O-isopropylidene-3,5-dihydroxyhexanoate in 14 steps through a β ...
Juanjuan Feng, Tianyu Li, Jiaxin Zhang, Peng Jiao   +3 more
doaj   +1 more source

Synthesis of Anthraquinones by Iridium-Catalyzed [2 + 2 + 2] Cycloaddition of a 1,2-Bis(propiolyl)benzene Derivative with Alkynes

Inorganics, 2019
[2 + 2 + 2] cycloaddition of a 1,2-bis(propiolyl)benzene derivative with terminal and internal alkynes takes place in the presence of [Ir(cod)Cl]2 (cod = 1,5-cyclooctadiene) combined with bis(diphenylphosphino)ethane (DPPE) to give anthraquinones in 42 ...
Takahiro Sawano, Yuko Toyoshima, Ryo Takeuchi   +2 more
doaj   +1 more source

Supramolecular Zwitterionic Hydrogels for Information Encryption, Soft Electronics and Energy Storage at Icy Temperature

Advanced Functional Materials, EarlyView.
A series of ACHPES‐based hydrogels are developed and realizing multiple functions like anti‐fouling properties, alkali‐induced color/fluorescence‐changing ability and strain sensing. Furthermore, the hydrogels show excellent anti‐freezing performance, whose optical, mechanical and electrical properties remain stable at −47.3 °C.
Gaopeng Wang, Haochen Ni, Yifan Li, Hamdi Torun, Sherry Chen, Muhammad Wakil Shahzad, Xuehua Zhang, Si Yu Zheng, Ben Bin Xu, Jintao Yang   +9 more
wiley   +1 more source

High-level Computational Study of the Site-, Facial- and Stereoselectivities for the Diels-Alder Reaction Between o-Benzoquinone and Norbornadiene

Molecules, 2000
Ab initio and DFT quantum chemical calculations have been applied to a study of the Diels-Alder reaction of o-benzoquinone as diene and norbornadiene as dienophile.
Ronald N. Warrener, Martin R. Johnston, Davor Margetic   +2 more
doaj   +1 more source

Emerging Opportunities of Colloidal Quantum Dots for Photocatalytic Organic Transformations

Advanced Materials, EarlyView.
Colloidal quantum dots (QDs) have gained significant attention as photocatalysts in organic transformations in recent years. This review highlights QDs’ distinctive features, including the quantum size effect, compositional and structural diversity, tunable surface chemistry, and photophysics.
Qinxuan Cao, Jianning Feng, Kin Ting Chang, Wenfei Liang, Haipeng Lu   +4 more
wiley   +1 more source

Diels−Alder Topochemistry via Charge-Transfer Crystals:  Novel (Thermal) Single-Crystal-to-Single-Crystal Transformations [PDF]

, 2001
The solid-state [4+2] cycloaddition of anthracene to bis(N-ethylimino)-1,4-dithiin occurs via a unique single-phase topochemical reaction in the intermolecular (1:1) charge-transfer crystal.
Hubig, S. M., Kim, J. H., Kochi, Jay K., Lindeman, Sergey V.   +3 more
core   +1 more source