Results 31 to 40 of about 2,106,514 (153)

Density functional theory investigation of the contributions of π-π stacking and hydrogen bonding with water to the supramolecular aggregation interactions of model asphaltene heterocyclic compounds

Journal of Molecular Modeling
A complex supramolecular process involving electrostatic and dispersion interactions and asphaltene aggregation is associated with detrimental petroleum deposition and scaling that pose challenges to petroleum recovery, transportation, and upgrading. The
M. D. Lessa, Stanislav R. Stoyanov, J. W. M. de Carneiro, L. D. da Costa   +3 more
semanticscholar   +1 more source

An NHC‐Coordinated Silicon/Sulfur Analogue of an Acyl Carbene

Angewandte Chemie, Volume 138, Issue 35, 24 August 2026.
An NHC complex of an Si/S analogue of an acyl carbene is synthesized by the reaction of a disilyne with a cyclic thiourea. The observed Si2S three‐membered ring with unsymmetrical Si─S distances and a Si─Si single bond is consistent with intramolecular coordination of the silathioacyl sulfur to the silylene center.
Takuto Toyooka, Shintaro Ishida, Takeaki Iwamoto   +2 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, Mauro Uras, Angelo Frongia   +2 more
wiley   +1 more source

Unified Approach for the Synthesis of Close Analogues of Reverse‐Prenylated Hexahydropyrrolo Indole Alkaloids

European Journal of Organic Chemistry, Volume 29, Issue 39, 22 October 2026.
A simple, modular, and unified strategy for the synthesis of reverse‐prenylated hexahydropyrrolo indole alkaloids has been developed. An unusual retrosynthetic disconnection allows for the late introduction of a side chain, which distinguishes many members of this class of natural products.
Daniel Schmelzer, Carina S. Wencke, Christian B. W. Stark   +2 more
wiley   +1 more source

Cycloaddition between Electron-Deficient π-Systems, Photochemical and Radical-Induced Reactions:  A Novel, General, and Stereoselective Route to Polyfunctionalized Bridged Bicyclo[2.2.2]octanes, Bicyclo[3.3.0]octanes, Bicyclo[4.2.0]octanes, and Tricyclo[4.3.1.0^3,7]decanes

, 2016
A novel, general, and stereoselective route to functionalized bridged bicyclo[2.2.2]octanes, bicyclo[3.3.0]octanes, bicyclo[4.2.0]octanes, and tricyclo[4.3.1.03,7]decanes has been described.
Shantanu Pal (2413069), Shaikh M. Mobin (1545712), Vishwakarma Singh (628871)   +2 more
core   +2 more sources

Late-stage fluorination of bridged scaffolds: chemoselective generation of a CHF group at three positions of the bicyclo[3.3.1]nonane system [PDF]

, 2018
Monofluorobicyclo[3.3.1]nonane derivatives were prepared by late-stage fluorination, often proceeding with control of stereochemistry. Introduction of fluorine at the 3-, 6- or 7-position was achieved chemoselectively, the bicyclo system being ...
Richard, J-A, Marson, CM, Promontorio, R
core   +2 more sources

Alkoxyallenes in Modern Synthesis: Reactivity, Catalysis, and Complexity Generation

Advanced Synthesis &Catalysis, Volume 368, Issue 17, 1 September 2026.
The last decade has witnessed a remarkable transformation in alkoxyallene chemistry. Although historically employed as synthetic equivalents of acrolein or as versatile 3C synthons, alkoxyallenes are now increasingly recognized as highly adaptable platforms for synthetic design.
A. Lanfranco, M. Rusconi, J. Saglietto, P. Renzi, A. Deagostino, E. Azzi   +5 more
wiley   +1 more source

Cobalt/Photoredox Catalyzed Desymmetrization of Oxo and Azabicycles via Asymmetric Reductive Coupling With Alkynes

Advanced Science, Volume 13, Issue 52, 18 September 2026.
A one‐step, asymmetric reductive coupling of alkynes and oxa‐ and aza‐bicyclic olefins using a cobalt/photoredox catalytic system through desymmetrization. ABSTRACT Bicyclo[2.2.1]heptane frameworks represent a privileged structural motif prevalent in numerous natural products and bioactive molecules.
Subhankar Pradhan, Arko Saha, Bholanath Maity, Sayan Dutta, Luigi Cavallo, Basker Sundararaju   +5 more
wiley   +1 more source

Endophytic Fungi Natural Factories of Novel Bioactive Compounds

Chemistry &Biodiversity, Volume 23, Issue 9, September 2026.
This review provides a systematic analysis of 242 natural products isolated from 42 genera of endophytic fungi, highlighting their remarkable structural diversity and broad spectrum of biological activities . ABSTRACT Endophytic fungi represent a prolific and chemically diverse source of novel specialized metabolites with significant pharmacological ...
Dilmurod Murodullayev, Jakhongir Movlanov, Liu Wei, Wei Liu, Maksud Isokov, Santosh Kumar Bose, Fazliddin Kobilov, Zamira Djumayeva, Buston Islamov, Jamila Sherkulova, Zafar Matyakubov, Muniskhon Meylieva, Munisa Ergasheva, Diyor Abduraxmanov, Guozheng Huang, Hongchen Jiang, Kakhramon Davranov, Guohui Pan, Nigora Rustamova   +18 more
wiley   +1 more source

Medicinal and Crop Protection Chemistry: Breaking Barriers, Building Synergies

ChemMedChem, Volume 21, Issue 16, 27 August 2026.
A unified view of medicinal and crop protection chemistry reveals shared scientific progress, common challenges, and new opportunities for cross‐disciplinary collaboration. Bridging expertise across both fields could accelerate innovation and actively encourage more sustainable solutions.
Giulia Cazzaniga, Giusy L. Fratello, Alexander T. Apostle, Roberto Orru, David M. Barber, Silvia Gazzola   +5 more
wiley   +1 more source