Results 71 to 80 of about 4,025 (222)

Comparative Study of new Pyridazine Derivatives Towards Corrosion of Copper in Nitric Acid: Part-1

open access: yesInternational Journal of Electrochemical Science, 2010
The inhibition of the corrosion of copper in 2M HNO3 by 5-[hydroxy(phenyl)methyl]-6-methylpyridazin-3(2H)-one (P1), 4-(2-chlorobenzyl)-6-hydrazino-3-methyl-1,6-dihydropyridazine (P2), 5-(2,6-dichlorobenzyl)-6-methylpyridazin-3(2H)-one (P3) and 5-[(2 ...
A. Zarrouk   +7 more
doaj   +1 more source

Pyridazines. LXII. Tetrazolo-Azido Equilibria of Tetrazolo[1,5-b ]pyridazines

open access: yes, 1973
Tetrazolo[l,5-b]pyridazines exist in solution exclusively in the tetrazolo form. In solutions of strong acids an equilibrium of both forms, azido and tetrazolo, is established.
Stanovnik, B.   +5 more
core  

Towards discovery of novel scaffold with potent antiangiogenic activity; design, synthesis of pyridazine based compounds, impact of hinge interaction, and accessibility of their bioactive conformation on VEGFR-2 activities

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2019
Pyridazine scaffolds are considered privileged structures pertaining to its novelty, chemical stability, and synthetic feasibility. In our quest towards the development of novel scaffolds for effective vascular endothelial growth 2 (VEGFR-2) inhibition ...
Maiy Y. Jaballah   +6 more
doaj   +1 more source

1,2‐Diazetidines − Structure, Synthesis, and Functionalization

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 19, 22 May 2026.
1,2‐Diazetidines are saturated four‐membered heterocycles featuring two adjacent nitrogen atoms. Despite recent advances in their synthesis and promising potential in medicinal chemistry, the chemistry of these cyclic hydrazines remains underexplored.
Stefan Roesner
wiley   +1 more source

Imidazo[1,2-b]Pyridazines. XVI. Synthesis and Central Nervous System Activities of Some 6-(Chloro, Alkylthio, Phenylthio, Benzylthio or Pyridinylmethylthio)-3-(unsubstituted, benzamidomethyl or methoxy)-2-(styryl or benzoyl)imidazo[1,2-b]pyridazines

open access: yes, 1994
Some 6-( chloro, alkylthio, phenylthio, benzylthio or pyridinylmethylthio )-3-( unsubstituted , benzamidomethyl or methoxy )-2-styrylimidazo[1,2-b] pyridazines and 6-chloro-3-( unsubstituted and benzamidomethyl )-2-benzoylimidazo[1,2-b] pyridazines ...
LP Davies   +4 more
core   +1 more source

Unravelling the reaction mechanism of the reductive ring contraction of 1,2-pyridazines [PDF]

open access: yes, 2012
Substituted pyrroles may be synthesized from selected 1,2-pyridazines through a reductive ring contraction involving the addition of four electrons and four protons.
Silva, Pedro J.
core   +1 more source

Phosphorescent Platinum(II) Complexes With Diazinedipyrrolide Pincer Ligands: Structure and Photophysical Properties

open access: yesEuropean Journal of Inorganic Chemistry, Volume 29, Issue 15, 20 May 2026.
A new family of phosphorescent Pt(II) complexes with pyrimidinedipyrrolide ligands, including a pyrazine analog, was designed and synthesized. Their emission properties can be finely tuned via ligand modification, revealing strong phosphorescence originating from intraligand charge transfer transitions.
Marcela Horáková   +7 more
wiley   +1 more source

Synthesis of Derivatives of Pyrido [3,4-d]Pyridazines

open access: yes, 1972
The current interest in the biological activity of certain 1 ,4-disubstituted pyrido[2 ,3-d]pyridazines prompted the investigation of various derivatives of the isomeric pyrido[3,4-d]pyridazine ring system.
Martin, Diane (D\u27Ottavio)
core  

Imidazo[1,2-b]pyridazines. XV. Synthesis and Anxiolytic Activity of Some 3-(Benzamidomethyl and fluorobenzamidomethyl)-6-(fluoro, chloro and methylthio)-2-(4-tolyl and 3,4-methylenedioxyphenyl)imidazo[1,2-b]pyridazines

open access: yes, 1994
Syntheses are reported for some 3-( benzamido-and fluorobenzamido -methyl)-6-( fluoro , chloro and methylthio )-2(4-methyl-, 4-t-butyl-, 4-cyclohexyl- and 3,4-methylenedioxy-phenyl) imidazo-[1,2-b] pyridazines from the relevant 3-unsubstituted ...
SJ Ireland   +4 more
core   +1 more source

1,2,3-Triazolo[4,5-d]-1,2,4-triazolo[4,3-b]pyridazines

open access: yes, 1997
Some new 1,2,3-triazolo[4,5-d]-1,2,4-triazolo[4,3-b]pyridazines were prepared starting from the corresponding 1,2,3-triazolo[4,5-d]pyridazines via the formation of the 1,2,4-triazole ring, by condensation of an appropriate monocarbon fragment with the 4 ...
Livi O   +4 more
core  

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