Results 21 to 30 of about 10,045 (252)
Syntheses and Applications of 1,2,3-Triazole-Fused Pyrazines and Pyridazines
Molecules, 2022 Pyrazines and pyridazines fused to 1,2,3-triazoles comprise a set of heterocycles obtained through a variety of synthetic routes. Two typical modes of constructing these heterocyclic ring systems are cyclizing a heterocyclic diamine with a nitrite or ...
Gavin R. Hoffman, Allen M. Schoffstall
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Heterocyclic synthesis with nitriles: synthesis of pyridazine and pyridopyridazine derivatives [PDF]
, 2007 The reaction of MND with aryldiazonium chlorides followed by cyclization afforded the pyridazinimine derivatives. Reaction of the latter with another mole of malononitrile produce only pyrido[3,2-c]pyridazine derivatives.
Campos, Ana M. F. Oliveira +2 more
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Design, synthesis and characterization of novel thienylpyridazine derivatives for optical applications [PDF]
, 2015 We report in this work the synthesis and the photophysical characterization of novel pyridazine derivatives, functionalized in position 3, with different (hetero)aromatic groups (indole, cyanophenyl, nitrophenyl).
Fernandes, Sara S. M. +1 more
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Single crystal X-ray structure of 3-amino-5-(4-chlorophenyl)pyridazine-4-carbonitrile [PDF]
, 2013 The title compound 3-amino-5-(4-chlorophenyl)pyridazine-4-carbonitrile was prepared by a one-pot three-component reaction of malononitrile with corresponding arylglyoxal in the presence of hydrazine hydrate at room temperature in water and ethanol.
Ahmad Poursattar Marjani +3 more
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Molecules, 2013 Aiming for the synthesis of new heterocyclic compounds containing a sulfonamido moiety suitable for use as antibacterial agents, the precursor ethyl {[4-N-(4,6-dimethylpyrimidin-2-yl)sulfamoyl]phenylazo}cyanoacetate was reacted with a variety of active ...
Eman A. El-Bordany +2 more
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Molecules, 2017 Efficient synthesis of phenanthridin-6(5H)-one derivatives 12a–n in a four-component reaction of aldehyde hydrazone, aromatic aldehydes and malononitrile in Q-Tubes is reported. The results showed that the methodology has the advantage of being a one-pot
Majdah A. AL-Johani +5 more
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Pyridazinone Compounds: A Mini review on their antifungal activities
International Journal of New Chemistry, 2020 Pyridazine derivatives represent one of the most active classes of compounds possessing a wide spectrum of biological activity. They are widely used in pharmaceuticals and agrochemicals.
Mohammad Asif Abida , Md Tauquir Alam
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Functionalization of diazines and benzo derivatives through deprotonated intermediates. [PDF]
, 2008 International audienceThis critical review targets as a readership researchers generally oriented toward organic synthesis and in particular those active in heterocyclic chemistry.
Chevallier, Floris, Mongin, Florence
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Review of: "Use of the experimental designs as an approach to optimize the inhibition efficiency of a Pyridazine derivative against corrosion of steel in an acidic medium" [PDF]
, 2023 L. N. Emembolu
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Molecules, 2000 Pyrrolidino[3,4-c]pyrazoline and pyrazole derivatives were synthesized via reactions of a substituted hydrazonoyl bromide with N-arylmaleimides and active methylene reagents, respectively. Synthesized pyrazoles were reacted with hydrazine hydrate to give
Nagla A. Ahmed +3 more
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