Results 91 to 100 of about 37,751 (208)

Crystal Structure Analysis of 4-Oxo, 4-hydroxy- and 4-alkyl-7-bromopyrazolo[5,1-c][1,2,4]triazines. [PDF]

J Chem Crystallogr, 2022
Ivanov SM, Koltun DS.
europepmc   +1 more source

3-Substituted Blatter Radicals: Cyclization of N-Arylguanidines and N-Arylamidines to Benzo[e][1,2,4]triazines and PhLi Addition. [PDF]

J Org Chem, 2023
Pomikło D, Bodzioch A, Kaszyński P.
europepmc   +1 more source

An Efficient Cyanide-Free Approach towards 1-(2-Pyridyl)isoquinoline-3-carbonitriles via the Reaction of 5-Phenacyl-1,2,4-triazines with 1,2-Dehydrobenzene in the Presence of Alkyl Nitrites

, 2017
A cyanide-free method for the preparation of 1-(2-pyridyl)isoquinoline-3-carbonitriles (3-cyanoisoquinolines) was developed. The interaction of 5-phenacyl-3-(2-pyridyl)-1,2,4-triazines with 1,2-dehydrobenzene generated in situ from anthranilic acid and ...
Igor Kovalev, Oleg Chupakhin, Albert Khasanov, Sougata Santra, Adinath Majee, Ekaterina Starnovskaya, Vladimir Rusinov, Alexey Krinochkin, Anindita Mukherjee, Matiur Rahman, Pavel Slepukhin, Dmitry Kopchuk, Grigory Zyryanov   +12 more
core   +1 more source

Cascade Reactions of Substituted 1,2,4-Triazines:  Rapid Access to Nitrogen-Containing Polycycles

, 2016
A new and straightforward methodology for the construction of complex nitrogen-containing polycycles has been developed. This methodology exploits easily prepared 1,2,4-triazines as substrates for a pericyclic reaction cascade, forming the polycycles in ...
Steven A. Raw (2339695), Richard J. K. Taylor (1662202)   +1 more
core   +2 more sources

Cyanauric Chloride as a key precursor and a core component for Three-Armed Triazolopyrimidines: Recent finding about SARs and docking analyses

Results in Chemistry
The s-triazine trichloride is a reactive compound and can be used as key intermediate for delivering polysubstituted triazines specially the three-armed ones.
Mohamed G. Badrey, Sobhi M. Gomha, Magdi E.A. Zaki, Basant Farag, Ahmed A.M. El-Reedy   +4 more
doaj   +1 more source

Synthesis and crystal structures of 7,8-bromo (dibromo)-3-tert-butylpyrazolo[5,1-c][1,2,4]triazines. [PDF]

Struct Chem, 2021
Ivanov SM, Koltun DS.
europepmc   +1 more source

Corrosion Mitigation Performance of N80 Steel in 5% Sulfamic Acid Medium by Applying Novel Tetrahydro-1,2,4-triazines Including Triazene Moieties: Electrochemical and Theoretical Approaches. [PDF]

ACS Omega, 2022
Abd El-Lateef HM, Shalabi K, Arab AM, Abdallah YM.   +3 more
europepmc   +1 more source

Synthesis and DFT analysis of non-covalent interactions in crystal structures of 6-R-2-alkoxy-, 2,3-di-, and 2,2,3-tri-tert-butylpyrrolo[1,2-b][1,2,4]triazines. [PDF]

Struct Chem, 2023
Koltun DS, Ivanov SM.
europepmc   +1 more source

Positional Methyl Effects in Benzo[e][1,2,4]triazines—Synthesis and Crystal Structure Analysis of 5-Methyl-3-phenylbenzo[e][1,2,4]triazine and Its Precursor, N′-(3-Methyl-2-nitrophenyl)benzohydrazide

Crystals
We report the synthesis, spectroscopic characterization, and single-crystal X-ray structures of 5-methyl-3-phenylbenzo[e][1,2,4]triazine (I) and its precursor N′-(3-methyl-2-nitrophenyl)benzohydrazide (IV).
Christos P. Constantinides, Jin-Seok Yi, Haidar Dakdouk, Simona Marincean   +3 more
doaj   +1 more source

Chichibabin-type condensation of cyclic ketones with 3-R-1,2,4-triazin-5(4 H)-ones

, 2012
Reactions between substituted 1,2,4-triazines and ketones were investigated. General procedures for one-pot synthesis of hydrogenated derivatives of such polycyclic systems as benzo[c][1,2,4]triazino[1,6-a][2] azecine, [1,2,4]triazino[1,6-f]phenantridine,
Rusinov, Vladimir L., Kovalev, Igor S., Slepukhin, Pavel A., Tseitler, Tatyana A., Chupakhin, Oleg N., Egorov, Ilya N.   +5 more
core   +1 more source