Results 21 to 30 of about 928 (176)
Hybridization of Thiazole and Pyrazoline heterocycles, and the Biological Activities of Their Hybrid Scaffolds [PDF]
ERU Research JournalThiazoles and pyrazolines represent a class of heterocyclic compounds with attractive and considerable interest in medicinal chemistry due to their diverse pharmacological activities.
Mariam Fakhry, Amr Mattar
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Molecules, 2021 Indoles derived from both natural sources or artificial synthetic methods have been known to interact with aryl hydrocarbon receptors (AhR), and exhibit anticancer activity.
Katharigatta N. Venugopala +3 more
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Journal of Chemistry, 2013 Pyrazolines are well known and important nitrogen containing 5-membered heterocyclic compounds. In the present investigation, a series of various heteroaryl chalcones and pyrazolines were synthesized by condensing formylquinolines with diverse ketones ...
Vishal Banewar
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Synthesis of novel pyrazoline based bis (1,2,3-triazole) scaffolds via click chemistry [PDF]
Journal of the Serbian Chemical Society, 2017 A series of novel bis(1,2,3-triazoles) derivatives 7a–m were synthesized by the 1,3-dipolar cycloaddition (click-reaction) of 1-methyl-3,5-bis(2- -(prop-2-yn-1-yloxy)phenyl)-4,5-dihydro-1H-pyrazole (5) with various aralkyl azides 6a–m in the presence of ...
Kiran Kothuri +4 more
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Journal of Saudi Chemical Society, 2016 A series of 1-thiocarbamoyl-3-phenyl-5-hydroxy-5-(2-pyridyl)-4-pyrazolines derivatives have been synthesized using sodium acetate as a catalyst. The spectral characterization and structure of 1-thiocarbamoyl-3-phenyl-5-hydroxy-5-(2-pyridyl)-4-pyrazolines
D. Chinnaraja +3 more
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Molecules, 2021 A total of fourteen pyrazoline derivatives were synthesized through cyclo-condensation reactions by chalcone derivatives with different types of semicarbazide.
Kok Tong Wong +5 more
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THE TAUTOMERISM OF PYRAZOLINES (DIHYDROPYRAZOLES) [PDF]
Journal of the Chilean Chemical Society, 2015 The exception to the rule that Δ3-pyrazolines are not stable unless both nitrogen atoms are substituted that has been recently published, Tetrahedron Lett. 55, 2208, (2014), has been proved false. By means of GIAO/B3LYP/6-311++G(d,p) calculations, it has been shown that the product is a pyrazole formed by rearrangement.
ALKORTA, I, ELGUERO, J
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Synthesis and Pharmacological Evaluation of Some Phenylpyrazolo Indoquinoxaline Derivatives
E-Journal of Chemistry, 2011 Indoloquinoxalin was fused with 2,3 diphenyl quinoxaline by a methylene bridge which was then allowed for acetylation. The acetylated product was made to react with different aromatic aldehydes to give chalcones.
CH. Sridevi, K. Balaji, A. Naidu
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1-[5-(3,5-Dimethoxyphenyl)-3-(2-methoxyphenyl)-4,5-dihydro-1H-pyrazol-1-yl]ethanone
IUCrData, 2021 In the title compound, C20H22N2O4, two benzene rings bearing methoxy substituents are connected by a central acetylpyrazoline ring: the dihedral angle between the benzene rings is 83.7 (1)°.
Miri Yoo, Dongsoo Koh
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Azide‐to‐Diazo Transformation Facilitated by Michael Addition via Phosphazide Formation
Angewandte Chemie, Volume 138, Issue 23, 1 June 2026.A new type of Michael addition based on azide‐to‐diazo conversion is disclosed. This unusual transformation proceeds via 1,4‐addition accompanied by N─N bond cleavage of phosphazide intermediates under practical conditions. The high versatility of the resulting Michael adducts enables the synthesis of a wide variety of organonitrogen compounds ...
Tomoki Mano +3 more
wiley +2 more sources