نتایج جستجو برای: 4-Triazin-5-one

تعداد نتایج: 3635517  

Journal: :Acta Crystallographica Section E Structure Reports Online 2006

Transformation of 3-propargylmercapto-6 methyl-1, 2,4-triazin- 5 (2H)- one (1; R=CH3) to 3,6- dimethyl-7H- thiazolo [3,2-b] [1, 2, 4] triazin -7- one (2) is performed under basic condition. The formation of (2) may be mainly due to the high reactivity of acetylenes towards nucleophiles and isomerization of the intermediate. 

Majid M. Heravi Mehdi Bakavoli Zohreh Sadjadi Hashemi

Ring cleavage occurred when 1,2,4-triazino-1,2,4-triazines (3), (4) and (5) were treated with concentrated hydrochloric acid to yield N-substituted triazines (7) and (8). These confirm the given configuration assigned to the isomeric triazinotriazines. 6-Methyl-2-phenyl-7H-oxazolo [3,2-b][1,2,4]-triazin-7-one (9) underwent ring cleavage on treatment with sodium alkoxide to afford 3-alkoxy-1...

Journal: :Molecules 2006
Long-Chih Hwang Chun-Hsie Tu Jung-Hui Wang Gene-Hsiang Lee

The title compound 6-amino-3-benzylmercapto-1,2,4-triazolo[3,4-f][1,2,4]-triazin-8(7H)-one (4), molecular formula C(11)H(10)N(6)OS, was obtained by the reaction of 3-amino-2-benzyl-6-hydrazino-1,2,4-triazin-5(2H)-one (3) with carbon disulfide in a water/pyridine mixture. Compound 4 can also be synthesized by reacting 6-amino-3(2H)mercapto-1,2,4-triazolo[3,4-f][1,2,4]triazin-8(7H)-one (7) with b...

Journal: : 2022

Synthesis and structure elucidation of several series new hydrazones containing 1,2,4-triazine-5-one core their antioxidant activity are presented. The target compounds have been synthesized via interaction either 4-amino-6-( tert -butyl)-3-hydrazinyl-1,2,4-triazin-5(4 H )-one or 6-( -butyl)-3-hydrazinyl-1,2,4-triazin-5(2 with a wide range carbonyl group in moderate to high yields. Molecular st...

Journal: :Synthesis 2021

Abstract A new method for the fast synthesis of diverse 4-aryl-6-cycloamino-1,3,5-triazin-2-amines was developed. The is performed under microwave irradiation in a one-pot manner from cyanoguanidine, aromatic aldehydes, and cyclic amines. Their three-component reaction presence hydrochloric acid produced dihydrotriazines, which were then converted (without isolation) into targeted compounds via...

Journal: :journal of sciences islamic republic of iran 0

6-methyl- 1,2,4-triazine-3-(2h)-selenone-5(4h)-one(l) reacts in the presence of base with phenacyl bromide to give a mixture of compounds (2) and (3). this mixture is dehydrated in the presence of h,so, to give 3-phenyl-6 methyl-7h-selenazolo[3,2-b] [i ,2,4] triazin-7-one (6). for careful structure assignment of (6) its regioisomer 3-methyl-6-phenyl-4h-selenazolo [2,3-c] [ 1,2,4] triazin-4-one ...

Journal: :World Journal Of Advanced Research and Reviews 2021

Suzuki cross coupling reaction is one of the most famous organic reactions 20th century’s chemistry. It deemed as in field a very effective method for making carbon–carbon bonds. has been extensively utilized synthesis many carbon molecules including complex ones.Syntheses 2-diethylamino-4H-7-(Het) aryl pyrido [1,2-a] [1,3,5] triazin-4-ones are currently under investigation order to obtain grea...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2014
majid m. heravi mehdi bakavoli zohreh sadjadi hashemi

ring cleavage occurred when 1,2,4-triazino-1,2,4-triazines (3), (4) and (5) were treated with concentrated hydrochloric acid to yield n-substituted triazines (7) and (8). these confirm the given configuration assigned to the isomeric triazinotriazines. 6-methyl-2-phenyl-7h-oxazolo [3,2-b][1,2,4]-triazin-7-one (9) underwent ring cleavage on treatment with sodium alkoxide to afford 3-alkoxy-1,2,4...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2012
Divyesh Patel Rahul Patel Premlata Kumari Navin B Patel

A novel series of thiazolidinone derivatives, namely 4-{4-dimethylamino-6-[4-oxo-2-phenyl-5-(4-pyridin-2-yl-piperazin-1-ylmethyl)-thiazolidin-3-yl]-[1,3,5]-triazin-2-yloxy}-1-methyl-1H-quinolin-2-ones, have been synthesized from the key intermediate 4-(4-amino-6-dimethylamino-[1,3,5]-triazin-2-yloxy)-1-methyl-1H-quinolin-2-one (5). Compound 5 was condensed with various aldehydes to give Schiff ...

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