18826-96-5Relevant academic research and scientific papers
Facile synthesis of [1,2,4]triazino[4,3-b][1,2,4,5]tetrazepin derivatives by a one-pot reactions using 4-amino-3-hydrazinyl-6-methyl-1,2,4-triazin-5(4H)-one
Vahedi, Hooshang,Rajabzadeh, Ghadir,Farvandi, Fahimeh
, p. 1419 - 1422 (2010)
4-Amino-3-mercapto-6-methyl-1,2,4-triazin-5(4. H)-one 1 converted to 4-amino-6-methy-3-(methylthio)-1,2,4-triazin-5(4. H)-one by methylation with methyl iodide. Controlled hydrazination of the resulting compound afforded 4-amino-3-hydrazinyl-6-methyl-1,2,4-triazin-5(4. H)-one 2 as a building block, to the synthesis of some novel derivatives of [1,2,4]triazino [4,3,. b][1,2,4,5]tetrazepine 3-6, by the reaction with 3-chloropentane-2,4-dione, chloro acetonitrile, 1,3-dichloroacetone, and methyl bromoacetate. This general synthetic procedure can be extended to the preparation of wide variety of tetrazepines using 1,2-bielectrophiles derivatives.
Synthesis, characterization, and biological activity of some aza-uracil derivatives
El-Barbary, Ahmed Ahmed,Hafiz, Yehia Ahmed,Abdel-Wahed, Mohamed Shaker
scheme or table, p. 639 - 644 (2011/07/31)
Thiation of 1 by LR gave the corresponding 3,5-dithioxo derivative 2 and the trimer 3. Methylation of 1 afforded the S-methyl derivative 4. Compound 1 was fused with 6-bromo-2-phenyl-benzo[1,3-d]oxazin-4-one (5) and gave 6. Condensation of 1 with some acid derivatives 7a-d and/or 8a-c yielded thiadiazolo-triazine derivatives 9a-d and 10a-c. Compounds 9a,c and 10c were hydrolyzed to furnish 11a-c. Acetylation of 14 afforded mono- and diacetyl-derivatives 15 and 16. Benzoylation of 14 afforded mono- and dibezoyl-derivatives 17 and 18. 14 with some aromatic aldehydes yielded 19a-c. Reacting 14 with phenyl (iso- and/or isothio-) cyanate gave the urea derivatives 20a,b. Thiation of 14 with P4S10 furnished 21. The newly synthesized compounds were tested as antimicrobial agents.
RING-OPENING REACTION OF THE 1,3-DIAZETIDINE RING: HYDRAZINOLYSIS OF 2,4-BIS(HETEROARYLIMINO)-1,3-DIAZETIDINE DERIVATIVES
Molina, P.,Alajarin, M.,Lopez-Leonardo, C.,Elguero, J.,Claramunt, R. M.
, p. 791 - 798 (2007/10/02)
Reaction between 1,3-diaryl-2,4-bis(heteroarylimino)-1,3-diazetidines and anhydrous hydrazine yield 4-aryl-3-heteroarylimino-5-arylamino-2H-2,3-dihydro-1,2,4-triazoles.When methylhydrazine is used instead of hydrazine 1-methyl and, in some cases, 2-methyl derivatives were isolated.A tentative mechanism is proposed for the different compounds, which were fully characterized by mass spectrometry and 1H and 13C n.m.r. spectroscopy.
Alkylation of 4-Amino-3-mercapto-1,2,4-triazin-5(4H)-ones and Oxidation of the Products
Sauter, Fritz,Jordis, Ulrich,Siddiqi, Suhaib M.
, p. 2714 - 2730 (2007/10/02)
4-Amino-1,2,4-triazin-5(4H)-ones were alkylated with different alkylating agents to give N- and S-alkylated products. 4-Amino-3-methylthio-1,2,4-triazin-5(4H)-one (2a) was oxidized at position 5 to give 4-amino-3-methylthio-1,2,4-triazine-5,6(1H,4H)-dione (4) with Br2/H2O, Br2/EtOH or NBS/EtOH, while Br2/MeOH gave 4-amino-6-methoxy-3-methylthio-1,2,4-triazin-5(4H)-one (8a).
Herbicidally active 1,2,4-triazin-5-one derivatives
-
, (2008/06/13)
Herbicidally active derivatives of the formula STR1 in which R represents methyl, ethyl or n-propyl.
Herbicidal agents
-
, (2008/06/13)
3-[HYDROGEN-, (UNSUBSTITUTED AND HALO, AMINO, NITRO, ALKYL, ALKANOYL, ALKOXY, ALKYLMERCAPTO, ARYLOXY AND/OR ARYL-MERCAPTO-SUBSTITUTED) ALIPHATIC-, CYCLOALIPHATIC-, ARALIPHATIC-, ARYL-, OR HETEROCYCLIC- -SUBSTITUTED OXY, MERCAPTO OR AMINO]4-[AMINO; MONO AND DI (UNSUBSTITUTED AND CYANO, HYDROXY AND/OR HALO-SUBSTITUTED) ALKYL- AND/OR ALKANOYL-AMINO; N-heterocyclic; or N-(unsubstituted and aryl, haloaryl, alkoxyaryl, nitroaryl and/or heterocyclic- substituted) alkylidene or cycloalkylidene]-6-[(unsubstituted and halo, nitro, carbo lower alkoxy, alkyl, alkoxy, alkylmercapto, aralkylmercapto, aryloxy and/or arylmercapto-substituted) aliphatic, cycloaliphatic, araliphatic, aryl, or heterocyclic]-1,2,4-triazine-5-ones, which possess herbicidal properties, and which may be produced by conventional methods.
