Results 51 to 60 of about 5,513 (178)

Diethyl indolizine-1,3-dicarboxylate

open access: yesActa Crystallographica Section E, 2011
The title compound, C14H15NO4, was prepared by a 1,3-dipolar cycloaddition from N-(ethoxycarbonylmethy)pyridinium bromide and ethyl acrylate. The –CO2 side chains form dihedral angles of 0.2 (3) and 2.4 (3)° with ...
Bing-Xiang Wang   +3 more
doaj   +1 more source

Bioorthogonal Chemistry in Neurobiology: From Imaging to Proteomics

open access: yesChemBioChem, Volume 27, Issue 20, 28 October 2026.
This review highlights emerging strategies for labeling neuronal proteins, enabling visualization and quantitative analysis of their expression, localization, and dynamics. By combining genetic code expansion (GCE), metabolic labeling, and click chemistry‐based labeling, these approaches provide powerful routes to study proteins in specific cells and ...
Neil Taylor   +2 more
wiley   +1 more source

Synthesis, Physicochemical Characteristics, Self‐Assembly and Encapsulation Ability of per‐Ethylene‐Glycol‐Functionalized Resorcin[4]Arenes and Their Molecular Capsules: On the Road to Liquid Capsules

open access: yesChemistry – A European Journal, Volume 32, Issue 40, 27 October 2026.
Per‐ethylene‐glycol (EG)‐functionalized resorcin[4]arenes containing 12, 16, and 20 EG groups namely compounds 1d, 1e, and 1f, respectively, were prepared and found to self‐assemble, in organic solvents, into hexameric capsules. These capsules are more dynamic than the ones prepared based on alkyl substituted resorcin[4]arenes.
Gangadhara Angajala   +3 more
wiley   +1 more source

Chelation‐Assisted Metal‐Catalyzed Ligation and Cleavage Reactions for Chemical Biology

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 39, 22 October 2026.
Chelation‐assisted transition metal catalysis has emerged as a promising complement to bioorthogonal click chemistry for studying biological processes. By pre‐organizing catalytic metal centers, designed coordinating substrates enhance reactivity and biocompatibility, enabling site‐selective ligation and decaging reactions in complex biological media ...
Emilie Plantiveau   +3 more
wiley   +1 more source

Regiospecific 1 ,3-Dipolar Cycloaddition Polymerization of Keto-Stabilized Bisalkylidenephosphoranes with Bisazides

open access: yes, 1972
Department of Chemistry, Laboratory of Macromolecular and Organic Chemistry, University of Louvain, B-3030 Heverlee, Belgium Received 4 September 1972 Thennostable poly-1,2,3-triazoles (7) were prepared by the regiospecific rt:action of bisazides with. keto-stabilhed bisalkylidenephosporanes (6) in DMSO solution.
P. YKMAN, G. L' ABBE, G. SMETS
openaire   +2 more sources

1,3-Dipolar Cycloaddition in the Preparation of New Fused Heterocyclic Compounds via Thermal Initiation

open access: yesMolecules, 2016
This paper describes the synthesis of precursors with a benzo[b]furan skeleton for the intramolecular 1,3-dipolar cycloaddition of azomethine ylides prepared from N-substituted 3-allyl-aminobenzo[b]furan-2-aldehydes and secondary amines derived from α ...
Martin Porubský   +2 more
doaj   +1 more source

1, 3-Dipolar Cycloaddition of Diazomethane with Carbon-Carbon Unsaturated Systems Involving Nitrofuran Ring

open access: yesJournal of Synthetic Organic Chemistry, Japan, 1968
1, 3-Dipolar cycloaddition reaction of diazomethane with 5-nitro-2-furylacrylic acid gave 4- (5'-nitro-2'-furyl) -3-carbomethoxypyrazoline (3), mp 184485°C, in 80% yield. A similar reaction with 5-nitro-2-furylpropiolic acid afforded the corresponding isomeric mixture of the 2-pyrazole derivatives in 25% yield. (1) was refluxed in toluene to afford 2- (
SASAKI, Tadashi, SHOJI, Katsuhiko
openaire   +3 more sources

Copper–phenanthroline catalysts for regioselective synthesis of pyrrolo[3′,4′:3,4]pyrrolo[1,2-a]furoquinolines/phenanthrolines and of pyrrolo[1,2-a]phenanthrolines under mild conditions

open access: yesBeilstein 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

Synthesis of spiro[isoindole-1,5’-isoxazolidin]-3(2H)-ones as potential inhibitors of the MDM2-p53 interaction

open access: yesBeilstein Journal of Organic Chemistry, 2016
A series of spiro[isoindole-1,5-isoxazolidin]-3(2H)-ones has been synthesized by 1,3-dipolar cycloaddition of N-benzylnitrone with isoindolin-3-methylene-1-ones.
Salvatore V. Giofrè   +10 more
doaj   +1 more source

Ultrasound-Assisted Synthesis of 1-N-glycosyl-1H-1,2,3-Triazole Derivatives and their Anti-inflammatory Activity

open access: yesOrbital: The Electronic Journal of Chemistry, 2012
We have been synthesized various glycosyl triazoles from the reaction between glycosyl azide (1) and terminal alkynes (2a-g). The glycopiranosyl 1,2,3-triazoles (3-9) have been obtained in moderate-to-excellent yields (63-99%) through the copper (I ...
Gilson Bezerra Silva   +1 more
doaj   +1 more source

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