Results 51 to 60 of about 451,004 (214)

Organocatalyzed Enantio- and Diastereoselective Domino [3+2]-Dipolar Cycloaddition: Synthesis of Chiral Pyrrorlo-thiazine-2-carbaldehydes and Dihydropyrrole-3-carbaldehydes [PDF]

open access: yes, 2023
1,3-Dipolar cycloaddition of azomethine ylide and dipolarophile is an efficient method to construct N, S heterocycles such as thiazoles, 1,4-thiazines, and their chiral polyhydro derivatives.
Venkata Surya Kumar , Choutipalli   +3 more
core   +2 more sources

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

Antibody-Catalysis of a Bimolecular Asymmetric 1,3-Dipolar Cycloaddition Reaction

open access: yes, 2016
Antibody-Catalysis of a Bimolecular Asymmetric 1,3-Dipolar Cycloaddition ...
Yunfeng Hu (2255629)   +4 more
core   +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

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

open access: yesMolecules, 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   +9 more
doaj   +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

(S)-(-)-Limonene Derivatives Containing (1H-1,2,3-Triazol-4-yl)methyl 4-Bromobenzoate

open access: yesMolbank, 2011
The synthesis of (S)-(-)-limonene derivatives containing (1H-1,2,3-triazol-4-yl)methyl 4-bromobenzoate were obtained by epoxidation, azidolysis and Huisgen’s 1,3-dipolar cycloaddition.
Guillermo Valdomir, Danilo Davyt
doaj   +1 more source

Microwave-Assisted Synthesis of Fluorescent Pyrido[2,3-b]indolizines from Alkylpyridinium Salts and Enaminones

open access: yesMolecules, 2020
Pyridinium ylides are well recognized as dipoles for cycloaddition reactions. In its turn, the microwave-assisted interaction of N-(cyanomethyl)-2-alkylpyridinium salts with enaminones unexpectedly proceeds as a domino sequence of cycloisomerization and ...
Ekaterina A. Sokolova   +6 more
doaj   +1 more source

Síntese regiosseletiva de cristais líquidos contendo o heterociclo isoxazol [PDF]

open access: yes, 2008
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em QuímicaMoléculas com características líquido-cristalinas têm ultimamente atraído um grande interesse por parte de ...
Bryk, Fernando Rebouças
core  

Decarboxylation-Driven Double Annulations: Innovative Multi-Component Reaction Pathways

open access: yesMolecules
A concerted five-component reaction strategy has been developed, featuring double [3+2] cycloadditions utilizing aspartic acid. This approach provides valuable insights into mechanistic pathways, allowing for the distinction between concerted and ...
Desheng Zhan   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy