Results 101 to 110 of about 37,751 (208)

Cascade reactions of substituted 1,2,4-triazines: rapid access to nitrogen-containing polycycles

, 2004
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 ...
Raw, S.A., Taylor, R.J.K.
core   +1 more source

Synthesis of 5,7-Diamino[1,2,4]triazolo[1,2-a][1,3,5]triazines via Annulation of 1,3,5-Triazine Ring onto 3(5)-Amino-1,2,4-trizoles

, 2007
The 5,7-diamino[1,2,4]triazolo[1,5-a][1,3,5]triazines were synthesized by cyclocondensation of 3(5)-amino-1,2,4-triazoles with cyanoguanidine. The substituted 3(5)-amino-1,2,4-triazoles were prepared from corresponding hydrazides and S-methylisothiourea ...
W. Chui (23304466), A. Dolzhenko (23301721), Anton Dolzhenko (2304007)   +2 more
core  

Design, Synthesis, and Antimicrobial Evaluation of New Annelated Pyrimido[2,1-c][1,2,4]triazolo[3,4-f][1,2,4]triazines. [PDF]

Molecules, 2020
El Azab IH, Elkanzi NAA.
europepmc   +1 more source

A CONVENIENT AND GENERAL SYNTHESIS OF THIADIAZOLO [2,3-C] [1,2,4] TRIAZINES [PDF]

Journal of Sciences, Islamic Republic of Iran, 1999
Condensation and cyclization of 5-hydroxy- 1,2,4- thiadiazol-2-yl hydrazine 1 with pyruvic acid, phenacyl bromide, propargyl bromide and ally1 bromide afforded compounds 2,5,7 3, 4 ,6 and 8 respectively, Reaction of 1 with epichforohydrine afforded 4 ...
doaj  

Synthesis, biological activity and molecular modeling study of novel 1,2,4-triazolo[4,3-b][1,2,4,5]tetrazines and 1,2,4-triazolo[4,3-b][1,2,4]triazines. [PDF]

Sci Rep, 2020
El-Reedy AAM, Soliman NK.
europepmc   +1 more source

Synthesis of C-(β-D-glucosaminyl)-1,2,4-triazines

, 2018
In my diploma thesis I studied the syntheses of C-glucosaminyl-1,2,4-triazines and 1,2,4-triazin-5(4H)-ones. For the preparation of the target heterocycles C-(2-deoxy-2-phthalimido-3,4,6-tri-O-acetyl-β-D-glucopyranosyl)formamidrazone was prepared first ...
Hashimov, Mahir
core  

Synthesis and crystal structures of 6- and 8-methyl-3-phenyl-benzo[<i>e</i>][1,2,4]triazines. [PDF]

Acta Crystallogr E Crystallogr Commun
Constantinides CP, Raza S, Bazzi F, Sharara N, Marincean S.   +4 more
europepmc   +1 more source

General Synthesis of 1-Aryl-6-azaisocytosines and Their Utilization for the Preparation of Related Condensed 1,2,4-Triazines. [PDF]

Molecules, 2019
Zálešák F, Slouka J, Stýskala J.
europepmc   +1 more source

Synthesis, Properties, and Biological Activity Evaluation of Some Novel Naphtho[2,1-e]pyrazolo[5,1-c][1,2,4]triazines. [PDF]

Int J Mol Sci
Burcă I, Bercean VN, Rusu GI, Pop R, Diaconescu AM, Badea V, Péter F.   +6 more
europepmc   +1 more source

Photocyclization of 8-Aryloxybenzo[<i>e</i>][1,2,4]triazines Revisited: Unambiguous Structural Assignment of Planar Blatter Radicals by Correlation NMR Spectroscopy. [PDF]

J Org Chem
Singh HK, Kaźmierski S, Kaszyński P.
europepmc   +1 more source