Results 121 to 130 of about 89,598 (163)

ChemInform Abstract: 1,2,4‐Triazine. Part 4. Conversion of 1,2,4‐Triazine N4‐Oxides to Chloro‐ and Chloromethyl‐1,2,4‐triazines with POCl3.

ChemInform, 1993
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
J. K. LEE, H. C. KWON, H. G. KIM
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Molecular docking, dynamics simulations and 3D-QSAR modeling of arylpiperazine derivatives of 3, 5-dioxo-(2H, 4H)-1, 2, 4-triazine as 5-HT1AR agonists

Comput. Biol. Chem., 2019
Serotonin receptor, 5-HT1AR, agonists and partial agonists have established drug candidates for psychiatric and neurologic disorders. Recently, we reported the synthesis and evaluation of arylpiperazine derivatives of 3,5-dioxo-(2H,4H)-1,2,4-triazine as ...
D. R. Sherin, C.K. Geethu, J. Prabhakaran, J. Mann, J. S. Dileep Kumar, T. Manojkumar   +5 more
semanticscholar   +1 more source

From 3-chloromethyl-1,2,4-triazine 4-oxides to various substituted pyridines and 1,2,4-triazines

Russian Chemical Bulletin, 2005
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
V. N. Kozhevnikov, D. N. Kozhevnikov, O. V. Shabunina, N. N. Kataeva, S. A. Yushchuk, V. L. Rusinov, O. N. Chupakhin   +6 more
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An Energetic (Nitro-NNO -azoxy)triazolo-1,2,4-triazine

Annalen der Pharmacie, 2019
7-Nitro-3-(nitro-NNO-azoxy)[1,2,4]triazolo[5,1-c][1,2,4]triazin-4-amine (4) is the first high-melting compound bearing adjacent nitro-NNO-azoxy and amino groups. It was synthesized by nitration of 7-nitro-3-(tert-butyl-NNO-azoxy)[1,2,4]triazolo [5,1-c][1,
O. V. Anikin, N. E. Leonov, M. S. Klenov, A. M. Churakov, A. A. Voronin, N. Muravyev, Y. Strelenko, I. Fedyanin, V. Tartakovsky   +8 more
semanticscholar   +1 more source

Synthesis of some new pyrazolo[5,1-c][1,2,4]triazine derivatives and computational study

, 2020
In this study, the synthesis novel of seven new pyrazolo [5,1-c][1,2,4]triazin derivative disperse dyestuffs was reported. First, 2-arylhydrazone-3-ketiminobutyronitriles were synthesized and reacted with hydrazine hydrate to afford 5-amino-4-arylazo-3 ...
F. Yıldırım, A. Demirçalı, A. Kiraz, F. Karcı   +3 more
semanticscholar   +1 more source

ChemInform Abstract: SYNTHESIS OF 1,2,4‐TRIAZINES. IX. SYNTHESIS OF CYCLOPENTA(E)‐1,2,4‐TRIAZINES

Chemischer Informationsdienst, 1982
AbstractDie Vertreter (IV), (XI), (XII) und (XIII) des bisher unbekannten Titel‐Systems werden durch Kondensation der entsprechenden Diole (I) mit den Amidrazonen (II), (VI) [oder (VII)], (VII) bzw. (IX) dargestellt, wobei die Richtung der Reaktion von (V) lösungsmittelabhängig ist [eine Umlagerung von (VII) in (VI) erfolgt in ammoniakalischem Methanol]
H.‐J. METZ, H. NEUNHOEFFER
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Synthesis of 1,2,4-triazines - XIV. Regioselective synthesis of ethyl 1,2,4-triazine-5-carboxylates

Tetrahedron, 1992
Abstract Ethyl 1,2,4-triazine-5-carboxylates 6 were prepared by heating N,N-dimethylaminomethylene- or ethoxymethylenehydrazones 5 with ammonium acetate in acetic acid at 100°C. NMR studies confirmed the absence of their regio isomers (6-carboxylates), showing the high regioselectivity of this procedure.
Tadashi Ohsumi, Hans Neunhoeffer
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Reaction of 1,2,4-triazines with nitronate anions, direct nucleophilic acylation of 1,2,4-triazines.

Tetrahedron Letters, 1984
Abstract Nitronate anions replace 5-hydrogen atom in a variety of 3-substituted 1,2,4-triazine derivatives giving oximes of 5-formyl and 5-acyl 1,2,4-triazines.
A. Rykowski, M. Mąkosza
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ChemInform Abstract: SYNTHESIS OF 1,2,4‐TRIAZINES, VIII. SYNTHESIS OF 1,2,4‐TRIAZINE 4‐OXIDES

Chemischer Informationsdienst, 1978
AbstractDie aus den Hydrazono‐oximen (I) und den Orthocarbonsäureestern (II) erhältlichen Esterhydrazone (III) werden beim Erhitzen in Benzonitril (200°C) zu den Triazinoxiden (IV) cyclisiert.
V. BOEHNISCH, G. BURZER, H. NEUNHOEFFER
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1,2,4‐triazines. III. A convenient synthesis of 1,2,4‐triazines and their covalent hydration

Journal of Heterocyclic Chemistry, 1970
AbstractA general synthesis of 1,2,4‐triazines, from 3‐methylthiotriazines is described. It has been shown that 1,2,4‐triazines undergo covalent hydration across the N4‐C5 bond.
William W. Paudler, Teh‐Kuei Chen
openaire   +1 more source