40176-78-1

Usage

Uses

Used in Organic Electronics:
2-Ethynylquinoline is used as a component in the development of organic light-emitting diodes (OLEDs) and other optoelectronic devices due to its strong fluorescence properties. Its incorporation enhances the performance and efficiency of these devices, making it a valuable material in the field of organic electronics.
Used in Fluorescent Probes for Biological Applications:
2-Ethynylquinoline serves as a fluorescent probe for detecting and imaging biological molecules and processes in living cells. Its strong fluorescence allows for the tracking and visualization of cellular events, making it a useful tool in biological research and diagnostics.
Used in the Synthesis of Organic Compounds:
As a building block, 2-Ethynylquinoline is utilized in the synthesis of various organic compounds. Its unique structure and properties make it a versatile component in the creation of new molecules with potential applications in various fields, including pharmaceuticals, materials science, and chemical research.

InChI:InChI=1/C11H7N/c1-2-10-8-7-9-5-3-4-6-11(9)12-10/h1,3-8H

Upstream product

• 86521-07-5 2-((trimethylsilyl)ethynyl)quinoline 
• 218902-66-0 1,1-dibromo-2-(2-quinolyl)-1-ethene 
• 5470-96-2 quinoline 2-carbaldehyde 
• 21047-57-4 diethyl (1-diazo-2-oxopropyl)phosphonate 
• 2005-43-8 2-bromoquinoline 
• 1613-37-2 Quinoline N-oxide 
• 612-62-4 2-Chloroquinoline 
• 831235-64-4 2-methyl-4-(2′-quinolyl)but-3-yn-2-ol 

Downstream Products

• 119-91-5 2,2'-biquinoline 

Relevant academic research and scientific papers

New Photosensitizers Based on Heteroleptic CuI Complexes and CO2 Photocatalytic Reduction with [NiII(cyclam)]Cl2

Earth-abundant metal complexes have been attracting increasing attention in the field of photo(redox)catalysis. In this work, the synthesis and full characterisation of four new heteroleptic CuI complexes are reported, which can work as photose

Copper-Catalyzed Decarboxylative Alkylation of Terminal Alkynes

A copper-catalyzed decarboxylative alkylation of terminal alkynes under mild reaction conditions has been reported. Various alkyl diacyl peroxides were applied as the alkyl source for the formation of C(sp3)?C(sp) bond. A range of terminal alkynes including aryl alkynes and alkyl alkynes delivered the alkylated internal alkynes with good to high performances. Mechanism studies suggested that this reaction involves a free radical pathway. (Figure presented.).

Synthesis of 3,5-Disubstituted isoxazoles containing privileged substructures with a diverse display of polar surface area

We designed and synthesized the molecular framework of 3,5-disubstituted isoxazoles containing privileged substructures with various substituents which uniquely display polar surface area in a diverse manner. A library of 3,5-disubstituted isoxazoles were systematically prepared via 1,3-dipolar cycloaddition of alkynes with nitrile oxides prepared by two complementary synthetic routes; method A utilized a halogenating agent with a base and method B utilized a hypervalent iodine reagent. Through the biological evaluation of corresponding isoxazoles via three independent phenotypic assays, the different pattern of biological activities was shown according to the type of privileged substructure and substituent. These results demonstrated the significance of molecular design via introducing privileged substructures and various substituents to make a diverse arrangement of polar surface area within a similar 3-dimensional molecular framework.

BIARYLTRIAZOLE INHIBITORS OF MACROPHAGE MIGRATION INHIBITORY FACTOR

The present disclosure describes biaryl triazole compounds, as well as their compositions and methods of use. The compounds inhibit the activity of macrophage migration inhibitory factor and are useful for the treatment of diseases, e.g., inflammatory dis

Design, synthesis, and protein crystallography of biaryltriazoles as potent tautomerase inhibitors of macrophage migration inhibitory factor

Optimization is reported for biaryltriazoles as inhibitors of the tautomerase activity of human macrophage migration inhibitory factor (MIF), a proinflammatory cytokine associated with numerous inflammatory diseases and cancer. A combined approach was taken featuring organic synthesis, enzymatic assaying, crystallography, and modeling including free-energy perturbation (FEP) calculations. X-ray crystal structures for 3a and 3b bound to MIF are reported and provided a basis for the modeling efforts. The accommodation of the inhibitors in the binding site is striking with multiple hydrogen bonds and aryl-aryl interactions. Additional modeling encouraged pursuit of 5-phenoxyquinolinyl analogues, which led to the very potent compound 3s. Activity was further enhanced by addition of a fluorine atom adjacent to the phenolic hydroxyl group as in 3w, 3z, 3aa, and 3bb to strengthen a key hydrogen bond. It is also shown that physical properties of the compounds can be modulated by variation of solvent-exposed substituents. Several of the compounds are likely the most potent known MIF tautomerase inhibitors; the most active ones are more than 1000-fold more active than the well-studied (R)-ISO-1 and more than 200-fold more active than the chromen-4-one Orita-13.

Synthesis of sugar-derived triazole- and pyridine-based metal complex ligands

A series of 30 bi- and tridentate ligands for metals were prepared by copper-catalyzed coupling (CLICK reaction) of 2-ethynylpridine, 2-ethynyl-5-nitropyridine, 2-ethynylquinoline, and 2,6-diethynylpyridine with 12 protected glycosyl azides in the gluco a

2-(Substituted ethynyl)quinoline Derivatives as mGLUr5 Antagonists

Provided is a 2-(substituted ethynyl)quinoline derivative having an mGluR5 antagonistic activity and pharmaceutically acceptable salts thereof. The compound of the present invention can be useful as a medicament for treating and preventing mGluR5 receptor

Luminescence modulations of rhenium tricarbonyl complexes induced by structural variations

Octahedral d6 low-spin Re(I) tricarbonyl complexes are of considerable interest as noninvasive imaging probes and have been deeply studied owing to their biological stability, low toxicity, large Stokes shifts, and long luminescence lifetimes. We reported recently the bimodal IR and luminescence imaging of a Re(I) tricarbonyl complex with a Pyta ligand (4-(2-pyridyl)-1,2,3-triazole) in cells and labeled such metal-carbonyl complexes SCoMPIs for single-core multimodal probes for imaging. Re(I) tricarbonyl complexes have unique photophysical properties allowing for their unequivocal detection in cells but also present some weaknesses such as a very low luminescence quantum yield in aqueous medium. Further optimizations would thus be desirable. We therefore developed new Re(I) tricarbonyl complexes prepared from different ancillary ligands. Complexes with benzothiadiazole- triazole ligands show interesting luminescent quantum yields in acetonitrile and may constitute valuable luminescent metal complexes in organic media. A series of complexes with bidentate 1-(2-quinolinyl)-1,2,3-triazole (Taquin) and 1-(2-pyridyl)-1,2,3-triazole (Tapy) ligands bearing various 4-substituted alkyl side chains has been designed and synthesized with efficient procedures. Their photophysical properties have been characterized in acetonitrile and in a H 2O/DMSO (98/2) mixture and compared with those of the parent Quinta- and Pyta-based complexes. Tapy complexes bearing long alkyl chains show impressive enhancement of their luminescent properties relative to the parent Pyta complex. Theoretical calculations have been performed to further characterize this new class of rhenium tricarbonyl complexes. Preliminary cellular imaging studies in MDA-MB231 breast cancer cells reveal a strong increase in the luminescence signal in cells incubated with the Tapy complex substituted with a C12 alkyl chain. This study points out the interesting potential of the Tapy ligand in coordination chemistry, which has been so far underexploited.

Synthesis and biological evaluation of 2-(arylethynyl)quinoline derivatives as mGluR5 antagonists for the treatment of neuropathic pain

We described here the synthesis and biological evaluation of mGluR5 antagonists containing a quinoline ring structure. Using intracellular calcium mobilization assay (FDSS assay), we identified compound 5n, showing high inhibitory activity against mGluR5. In addition, it was found that compound 5n has excellent stability profile. Finally, this compound exhibited favorable analgesic effects in spinal nerve ligation model of neuropathic pain, which is comparable to gabapentin.

SUBSTITUTED QUINOLINES AND THEIR USE AS MEDICAMENTS

The invention relates to new substituted quinolines of formula (1) wherein R1 is a linear or branched C1-6-alkyl, wherein R1 may optionally be substituted by R3 which is selected from the group consisting of a three-, four-, five-, six- or seven-membered cycloalkl; a five-, six- or seven-membered, saturated heterocycle comprising one, two or three heteroatoms each independently selected from the group consisting of N, S and O; and a five- or six-membered heteroaryl comprising one, two or three heteroatoms each independently selected from the group consisting of N, S and O; wherein R3 may optionally be substituted further substituted as defined in claim 1 and wherein R2 is selected from the group consisting of halogen, phenyl, a five- or six-membered monocyclic heteroaryl comprising one, two or three heteroatoms each independently selected from the group consisting of N, S and O; a bicyclic, nine-, ten- or eleven-membered, either aromatic or non-aromatic, but not fully saturated heterocycle comprising one, two, three or four heteroatoms each independently selected from the group consisting of N, S and O; wherein R2 may optionally be further substituted as defined in claim 1, and their use in the preparation of medicaments for the treatment of disease such as asthma, COPD, allergic rhinitis, allergic dermatitis and rheumatoid arthritis.