Results 51 to 60 of about 6,255 (178)

[3+2] Cycloaddition Reaction for the Stereoselective Synthesis of a New Spirooxindole Compound Grafted Imidazo[2,1-b]thiazole Scaffold: Crystal Structure and Computational Study

Crystals, 2021
A new spirooxindole hybrid engrafted imidazo[2,1-b]thiazole core structure was designed and achieved via [3+2] cycloaddition reaction approach. One multi-component reaction between the ethylene derivative based imidazo[2,1-b]thiazole scaffold with 6-Cl ...
Mezna Saleh Altowyan, Saied M. Soliman, Matti Haukka, Nora Hamad Al-Shaalan, Aminah A. Alkharboush, Assem Barakat   +5 more
doaj   +1 more source

Phase‐Transfer‐Catalyzed Interrupted Barton–Zard Reaction Between Electron‐Deficient Indoles and Benzophenone‐Derived Isocyanides

European Journal of Organic Chemistry, Volume 29, Issue 19, 22 May 2026.
A cascade reaction under phase‐transfer conditions between 3‐nitro indoles and isocyanomethylene dibenzenes affords the construction of pyrrolo[3,4‐b]indole cores. Control experiments provide insight into moderate product yields and clarify why the reaction is not amenable to asymmetric induction. A cascade reaction enabling the construction of pyrrolo[
Ana Mikleušević, Ines Bašić, Mateja Matišić, Josip Rešetar, Matija Gredičak   +4 more
wiley   +1 more source

Asymmetric Transformations of α,β‐Unsaturated Oxazolidinones Catalyzed by C2‐Symmetric Chiral Iron Triad Complexes

Advanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.
This review highlights the evolution of highly enantioselective oxazolidinone transformations enabled by C2‐symmetric ligands, with emphasis on chiral iron triad complexes as cost‐effective, environmentally benign alternatives to late‐transition‐metal catalysts.
Arthur David, Thierry Ollevier
wiley   +1 more source

A Simple Method for Anchoring Silver and Copper Nanoparticles on Single Wall Carbon Nanotubes

Nanomaterials, 2019
Single walled carbon nanotubes (SWCNT) were functionalized using the 1,3-dipolar cycloaddition reaction of an azomethine ylide under solvent-free conditions, a one-pot procedure that yields pyrrolidine type of groups at the nanotubes surface.
Mariana M. Silva, Daniel Ribeiro, Eunice Cunha, M. Fernanda Proença, Robert J. Young, Maria C. Paiva   +5 more
doaj   +1 more source

Copper‐ and Silver‐Catalyzed Reactions of Active Methylene Isocyanides: Facile Access to Highly Substituted Five‐ and Six‐Membered Heterocycles

Chemistry – A European Journal, Volume 32, Issue 13, 1 April 2026.
This review summarizes recent advances in copper‐ and silver‐catalyzed reactions of active methylene isocyanides for the synthesis of highly substituted five‐ and six‐membered heterocycles. Emphasis is placed on [3+n] cycloadditions, annulations, and asymmetric strategies, highlighting current limitations and future opportunities in heterocycle ...
Jimil George, Kyungsoo Oh
wiley   +1 more source

An Efficient Synthesis of Novel Dispirooxindole Derivatives via One-Pot Three-Component 1,3-Dipolar Cycloaddition Reactions

Molecules, 2012
A series of novel dispirooxindoles have been synthesized through three-component 1,3-dipolar cycloaddition of azomethine ylides generated in situ by the decarboxylative condensation of isatin and an α-amino acid with the dipolarophile 5-benzylidene-1,3 ...
Yucheng Wang, Juxian Wang, Hongtao Liu, Huiyuan Wang, Wei Lin, Lexing Xu, Zhibin Huang, Gang Chen, Qian Zhao, Daqing Shi   +9 more
doaj   +1 more source

Heat‐Induced Toxicants: Sensory Appeal Distracts Consumers' Attention From Potential Toxicological Risks of Thermally Processed Foods

Food Science &Nutrition, Volume 14, Issue 4, April 2026.
The central paradox of thermal processing of foods. (A) The application of heat (e.g., frying, baking, grilling) to food initiates complex chemical reactions, most notably the Maillard reaction and thermal degradation of protein, lipids, and carbohydrate. (B) These reactions create a desirable sensory experience characterized by enticing aromas, golden‐
Joachim Dotto Matondo, Abdulsudi Issa‐Zacharia   +1 more
wiley   +1 more source

Benzotriazolylmethylaminosilanes: Novel azomethine ylide equivalents

Tetrahedron, 1994
Abstract Benzotriazolylmethylaminosilanes, readily accessible from the reaction of benzotriazole, an aldehyde and an (aminomethyl)silane in water at 20°C, are azomethine ylide equivalents which undergo stereospecific cycloadditions with dipolarophiles to give substituted pyrrolidines or 2,5-dihydropyrroles in good yields.
Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, FL 32611-7200 USA ( host institution ), R. Katritzky, Alan, Köditz, Jens, Lang, Hengyuan   +3 more
openaire   +2 more sources

Bis‐Furans: A Sustainable Source of Diverse Molecular Architectures

European Journal of Organic Chemistry, Volume 29, Issue 10, 9 March 2026.
A concise synthetic route to diverse acyclic and heterocyclic compounds has been developed by combining hetero‐Diels–Alder reactions, DBU‐promoted ring openings, and Lewis base‐catalyzed annulations. Nitrosoalkenes reacted with furan derivatives to form 4a,7a‐dihydro‐4H‐furo[2,3‐e][1,2]oxazines, which underwent DBU‐promoted rearrangements to 6H‐1,2 ...
Ana L. Cardoso, José A. Paixão, Teresa M. V. D. Pinho e Melo   +2 more
wiley   +1 more source

Nano‐ and Micro‐Sized Solid Materials Used as Antiviral Agents

Advanced Functional Materials, Volume 36, Issue 26, 30 March 2026.
Due to the rise of viral infections in humans and possible viral outbreaks, the use of nano‐ or micro‐sized materials as antiviral agents is rapidly increasing. This review explores their antiviral properties against RNA and DNA viruses, either as a prevention or a treatment tool, by delving into their mechanisms of action and how to properly assess ...
Orfeas‐Evangelos Plastiras, Imelda Raczkiewicz, Peggy Bouquet, Jean‐Philippe Dacquin, Jeremy Dhainaut, Anne Goffard, Christophe Volkringer   +6 more
wiley   +1 more source