Results 51 to 60 of about 3,099 (162)

Crystal structure and Hirshfeld surface analysis of (E)-6-(4-hydroxy-3-methoxystyryl)-4,5-dihydropyridazin-3(2H)-one

Acta Crystallographica Section E: Crystallographic Communications, 2019
In the title compound, C13H14N2O3, the dihydropyridazine ring (r.m.s. deviation = 0.166 Å) has a screw-boat conformation. The dihedral angle between its mean plane and the benzene ring is 0.77 (12)°.
Said Daoui, Cemile Baydere, Fouad El Kalai, Rafik Saddik, Necmi Dege, Khalid Karrouchi, Noureddine Benchat   +6 more
doaj   +1 more source

π‐Expanded Nitrogen‐Cation (N+)‐Doped Polycyclic Aromatic Hydrocarbons: A Review of Intramolecular Cyclization Routes to Benzo[c]Quinolizinium, Triazinium, Pyridoquinazolinium, and Pyridoquinoxalinium Frameworks

European Journal of Organic Chemistry, Volume 29, Issue 4, January 26, 2026.
This review surveys recent progress in the synthesis of extended aromatic quinolizinium derivatives via intramolecular SNAr and oxidative 6π‐electrocyclization. Conventional thermal approaches are discussed alongside emerging, sustainable activation methods such as electrosynthesis and photochemical processes.
Marine Labro, Cyrille Monnereau, Laure Guy   +2 more
wiley   +1 more source

RNA‐Lebendzellmikroskopie via click‐funktionalisierter TriPPPro Nucleotid‐Reporter

Angewandte Chemie, Volume 138, Issue 2, 9 January 2026.
Die intrazelluläre Zufuhr von trans‐Cycloocten und Bicyclo[6.1.0]nonin als sterisch anspruchsvolle Gruppen für die Diels–Alder‐Reaktion mit inversem Elektronenbedarf wurde durch die Triphosphat‐Prodrug‐Strategie (TriPPPro) erreicht. Nach der Hydrolyse innerhalb der Zelle werden die modifizierten Uridine und Cytidine metabolisch in die neu entstehende ...
J. Iven H. Knaack, Eileen List, Dörte Stalling, Vincente T. Sterrenberg, Chris Meier, Hans‐Achim Wagenknecht, Jens B. Bosse   +6 more
wiley   +1 more source

Synthesis of Pyridazine Derivatives by Suzuki-Miyaura Cross-Coupling Reaction and Evaluation of Their Optical and Electronic Properties through Experimental and Theoretical Studies

Molecules, 2018
A series of π-conjugated molecules, based on pyridazine and thiophene heterocycles 3a⁻e, were synthesized using commercially, or readily available, coupling components, through a palladium catalyzed Suzuki-Miyaura cross-coupling reaction.
Sara S. M. Fernandes, João Aires-de-Sousa, Michael Belsley, M. Manuela M. Raposo   +3 more
doaj   +1 more source

Synthesis, Characterization, and Biological Activity Study of New Heterocyclic Compounds

Engineering Proceedings
The synthesis of novel heterocyclic compounds is achieved through a multi-step process involving azo dye (S1), ester (S2), and hydrazide (S3). Initially, azo dye (S1) is synthesized through the reaction between resorcinol and p-aminobenzoic acid ...
Shahad M. Alsafy, Nour Abd Alrazzak
doaj   +1 more source

4-Benzyl-6-p-tolylpyridazin-3(2H)-one

Acta Crystallographica Section E, 2009
The title compound, C18H16N2O, is a new dihydropyridazin-3(2H)-one derivative synthesized in one step by condensation of α-benzylidene-γ-tolylbutenolide with hydrazine.
Ahmad Oubair, Jean-Claude Daran, Rachid Fihi, Lhou Majidi, Mohamed Azrour   +4 more
doaj   +1 more source

Bioorthogonal Chemistry in Biomolecule Quantification: A Review of Reactions and Strategies

Chemistry – A European Journal, Volume 32, Issue 1, 2 January 2026.
This review summarizes the application of catalyst‐free bioorthogonal reactions: Staudinger ligation, strain promoted azide alkyne cycloaddition, inverse electron‐demand Diels–Alder, and 2‐cyanobenzothiazole cysteine condensation in the semi‐quantitative and quantitative analysis of biomolecules.
Mingze Yang, Shiqi Wang
wiley   +1 more source

Comparative Inhibition Study of New Synthesised Pyridazine Derivatives Towards Mild Steel Corrosion in Hydrochloric Acid. Part-II: Thermodynamic Proprieties

International Journal of Electrochemical Science, 2012
The corrosion rates in the presence of new synthesised pyridazine derivatives (P1, P2, P3 and P4) as a steel corrosion inhibitors in 1 M hydrochloric acid, were measured by the weight loss method, in the range of temperatures from 303 to 353 K.
B. Zerga, B. Hammouti, M. Ebn Touhami, R. Touir, M. Taleb, M. Sfaira, M. Bennajeh, I. Forssal   +7 more
doaj   +1 more source

Electrochemical, DFT and Mont Carlo Simulations Studies to Evaluate the Inhibition Effect of Novel Pyridazine Derivatives on Iron Pitting Corrosion in 3.5 % NaCl

International Journal of Electrochemical Science, 2018
(6-Phenyl-pyridazin-3-ylsulfanyl)-acetic acid ethyl ester (PPS-A) and 4-(6-Phenyl-pyridazin-3-ylsulfanyl)-butyric acid ethyl ester (PPS-B) are synthesized and characterized as novel S-alkylated pyridazine derivatives with different side chain lengths ...
M.M. El-Deeb, N.S. Abdel-Shafi, A.H. Shamroukh   +2 more
doaj   +1 more source

4-[3-(Trifluoromethyl)phenyl]-5,6,7,8-tetrahydrocinnolin-3(2H)-one

Acta Crystallographica Section E, 2008
The title compound, C15H13F3N2O, contains one benzene ring, one cyclohexane ring and a pyridazine ring. The dihedral angle formed by the pyridazine ring with the benzene ring is 61.5 (2)°.
Hua-Zheng Yang, Xu-Hong Hu, You-Quan Zhu, Xiao-Mao Zou, Xin Wang   +4 more
doaj   +1 more source