Design, Synthesis, Characterization, and Antimicrobial Properties of New Azo Disperse Dyes Incorporating Quinazolinone-Pyrazolone Moieties and Their Applications for Dyeing of Polyester Fabrics
Sign Up to like & getrecommendations! Published in 2024 at "Fibers and Polymers"
DOI: 10.1007/s12221-024-00507-6
Abstract: The current study outlines a straightforward and efficient method for creating new quinazolinone disperse dyes based on pyrazolone moieties, starting with quinazolinone and a variety of substituted pyrazolone as couplers. The synthesized dyes were characterized… read more here.
Keywords: disperse dyes; pyrazolone; polyester fabrics; quinazolinone ... See more keywords
Cyclization of pyrazolones: novel synthesis of pyrano, pyrido, pyrimido and spiropyrazole derivatives
Sign Up to like & getrecommendations! Published in 2018 at "Journal of the Iranian Chemical Society"
DOI: 10.1007/s13738-018-1423-y
Abstract: Depending on the reaction conditions, two alternative cyclizations are possible for [3 + 3] cyclocondensation of pyrazolone derivative 1a and ethyl cyanoacetate of type pyrano [2,3-c] pyrazol-6(1H)-one 2 and pyrano [2,3-c] pyrazol-4(1H)-one 3. Keeping of enaminic system… read more here.
Keywords: pyrazolone; cyclization; pyrano; pyrazolone derivative ... See more keywords
Luminescent properties of Zn complexes based on tetradentate N2O2-donor pyrazolone schiff bases
Sign Up to like & getrecommendations! Published in 2020 at "Dyes and Pigments"
DOI: 10.1016/j.dyepig.2020.108626
Abstract: Abstract A nine new Zn(II) complex were synthesized based on a new Salen-type tetradentate N2O2 ligands derived from 1-phenyl-3-methyl-4-formyl-5-pyrazolone. Complexes have been characterized by single-crystal X-ray diffraction, ESI-mass spectroscopy, elemental analysis, IR spectroscopy and thermal… read more here.
Keywords: pyrazolone; luminescent properties; tetradentate n2o2; complexes based ... See more keywords
Novel copper(II) and palladium(II) complexes with 4-aroyl-5-pyrazolone ligands: Synthesis and characterization
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Organometallic Chemistry"
DOI: 10.1016/j.jorganchem.2019.05.026
Abstract: Abstract Novel bidentate 4-aroyl-5-pyrazolone ligands were synthesized and reacted with copper(II) and palladium(II) salts in 1:2 (metal:ligand) equimolar ratio leading to the formation of eight new coordination compounds. All synthesized compounds were characterized by FTIR,… read more here.
Keywords: copper; pyrazolone; palladium complexes; aroyl pyrazolone ... See more keywords
Pyrazole, pyrazolone and enaminonitrile pyrazole derivatives: Synthesis, characterization and potential in corrosion inhibition and antimicrobial applications
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Molecular Liquids"
DOI: 10.1016/j.molliq.2017.12.156
Abstract: Abstract Six pyrazole and pyrazolone derivatives namely: 3-amino-1-phenyl-5-pyrazolone (1), 3-amino-1-(2,4-dinitrophenyl)-5-pyrazolone (2), 1H-pyrazole-3,5-diamine-4-(2-phenyldiazenyl) (3), 1-phenyl pyrazole-3, 5-diamine, 4-[2-(4-methylphenyl) diazenyl] (4), 1H-pyrazole-3,5-diamine, 4-[2-(4-methylphenyl) diazenyl] (5), 5-amino-1,3–diphenyl-1H-pyrazolecarbonitrile (6) were synthesized and evaluated as corrosion inhibitors for copper alloy… read more here.
Keywords: corrosion inhibition; pyrazolone; corrosion; pyrazole diamine ... See more keywords
Bifunctional Lewis Base-Catalyzed (3 + 2) Cycloadditions of Pyrazolone-Derived MBH Carbonates with Arynes.
Sign Up to like & getrecommendations! Published in 2024 at "Organic letters"
DOI: 10.1021/acs.orglett.4c03410
Abstract: The (3 + 2) cycloaddition of arynes with allylic ylides remains a formidable challenge because both intermediates are highly reactive and prone to spontaneous quenching. Here, we report a (3 + 2) cycloaddition of pyrazolone… read more here.
Keywords: carbonates arynes; pyrazolone; lewis base; bifunctional lewis ... See more keywords
Catalytic and Multicomponent Reactions for Green Synthesis of Some Pyrazolone Compounds and Evaluation as Antimicrobial Agents
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DOI: 10.1021/acsomega.2c03070
Abstract: A green synthetic approach and facile method was developed to produce pyrazole compounds (6a–d) by the reaction of ethyl acetoacetate (1), hydrazines (2a–d), and catalytic imidazole (3) in aqueous media. 4-Dicyanomethylene-2-pyrazoline-5-one derivatives (14a–d) were synthesized… read more here.
Keywords: catalytic multicomponent; pyrazoline one; multicomponent reactions; reactions green ... See more keywords
Pyrazolone-Modified Photosensitizers for Precise Cell Membrane Rupture to Enhance Cancer Immunotherapy.
Sign Up to like & getrecommendations! Published in 2025 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.5c02764
Abstract: The advancement of immunotherapy aims to achieve complete tumor eradication. However, several critical challenges hinder the efficacy of conventional phototherapy-mediated immune responses, including insufficient immunogenicity and the presence of an immunosuppressive tumor microenvironment. Nonprogrammed cell… read more here.
Keywords: membrane rupture; pyrazolone; cell membrane; immunotherapy ... See more keywords
Catalytic asymmetric construction of C-4 alkenyl substituted pyrazolone derivatives bearing multiple stereoelements.
Sign Up to like & getrecommendations! Published in 2021 at "Chemical communications"
DOI: 10.1039/d1cc01123e
Abstract: An organocatalytic asymmetric process was reported for the sterically precise construction of C-4 alkenyl substituted pyrazolone derivatives bearing multiple stereoelements. A series of interesting products featuring the union of a centrally chiral pyrazolone moiety and… read more here.
Keywords: substituted pyrazolone; derivatives bearing; pyrazolone; construction alkenyl ... See more keywords
Catalytic asymmetric [3 + 2] cycloaddition of pyrazolone-derived MBH carbonate: highly stereoselective construction of the bispiro-[pyrazolone-dihydropyrrole-oxindole] skeleton.
Sign Up to like & getrecommendations! Published in 2022 at "Chemical communications"
DOI: 10.1039/d2cc00618a
Abstract: A catalytic asymmetric construction of the bispiro[pyrazolone-dihydropyrrole-oxindole] skeleton catalyzed by chiral DMAP-derived catalyst was successfully achieved by employing recently explored pyrazolone-derived MBH carbonate in high yields with excellent stereoselectivities. The proposed transition state indicated that… read more here.
Keywords: bispiro pyrazolone; dihydropyrrole oxindole; pyrazolone dihydropyrrole; construction bispiro ... See more keywords
Role of hydrazone substituents in determining the nuclearity and antibacterial activity of Zn(II) complexes with pyrazolone-based hydrazones.
Sign Up to like & getrecommendations! Published in 2022 at "Dalton transactions"
DOI: 10.1039/d2dt02430f
Abstract: Hydrazones and their metal derivatives are very important compounds in medicinal chemistry due to their reported variety of biological activities, such as antibacterial, antifungal and anticancer action. Five hydrazone-pyrazolone ligands H2Ln (n = 1-5) were… read more here.
Keywords: antibacterial activity; role hydrazone; hydrazone substituents; pyrazolone ... See more keywords