Results 51 to 60 of about 852 (167)
Beilstein Journal of Organic Chemistry, 2014 A new series of pyrrolo[3′,4′:3,4]pyrrolo[1,2-a]furoquinolines/phenanthrolines and pyrrolo[1,2-a]phenanthrolines were efficiently built up from an 8-hydroxyquinoline derivative or phenanthroline via 1,3-dipolar cycloaddition reaction involving non ...
Rupankar Paira +8 more
doaj +1 more source
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
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
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 +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 ) +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 +2 more
wiley +1 more source
Beilstein Journal of Organic Chemistry, 2016 An effective and highly regio- and diastereoselective one-pot method for the synthesis of new polynuclear dispiroheterocyclic systems with five stereogenic centers (dispiro[imidazo[4,5-e]thiazolo[3,2-b]-1,2,4-triazine-6,3′-pyrrolidine-2′,3′′-indoles ...
Alexei N. Izmest’ev +9 more
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2022 A reliable method for the synthesis of bis-spirocyclic derivatives of 3-azabicyclo[3.1.0]hexanes through the 1,3-dipolar cycloaddition (1,3-DC) reactions of cyclopropenes to the stable azomethine ylide – protonated form of Ruhemann's purple (PRP) has ...
Alexander S. Filatov +4 more
doaj +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 +6 more
wiley +1 more source
Sulfur Ylides in Skeletal‐Editing—Ring Expansion Reactions
Helvetica Chimica Acta, Volume 109, Issue 3, March 2026.Sulfur ylides (S‐ylides) are emergent diazo surrogates that enable skeletal editing and ring expansion with safer handling and broad functional group tolerance. This perspective covers pioneer works and highlights recent advances in the field, while outlining key challenges and future directions that may redefine the role of S‐ylides in modern ...
Arsala Kamal +3 more
wiley +1 more source