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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 59 (1994), S. 6487-6489 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 101 (1968), S. 3947-3951 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Benzaldehyd-äthoxymethylenhydrazon (2) reagiert mit Aminen unter Austausch der Äthoxygruppe gegen die Aminogruppe. Die Reaktion von so erhaltenem Benzaldehyd-aminomethylenhydrazon (3h) mit Phenylhydrazin-hydrochlorid liefert Formamidrazon-hydrochlorid (1·HCl).
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 101 (1968), S. 3952-3956 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Reaktion von Formamidrazon-hydrochlorid (1 · HCl) mit 1.2-Dioxoverbindungen in Gegenwart von Basen lassen sich 1.2.4-Triazine synthetisieren. Auch das unsubstituierte 1.2.4-Triazin (2) ist auf diesem Wege darstellbar.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 1113-1119 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of 1,2,4-Triazines, VII: Synthesis of Dialkylamino- and Methoxy-1,2,4-triazinesStarting with 3,5,6-trichloro-1,2,4-triazine (1j) some dialkylamino-and methoxy-1,2,4-triazines 1a-i, 1m, 1p-v are prepared.
    Notes: Ausgehend von 3,5,6-Trichlor-1,2,4-triazin (1j) werden eine Reihe von Dialkylamino- und Methoxy-1,2,4-triazinen 1a-i, 1m, 1p-v dargestellt.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 240-247 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemistry of 1,2,4-Triazines, IX: Reactions of 1,2,4-Triazine N-Oxides with DienophilesThe 1,2,4-triazine 4-oxides 8a-g react with 1-ethoxy-N,N-dimethylvinylamine (2a) to give the 5-methyl-1,2,4-triazines 3a-e, 6-, and 5-(2-dimethylamino-1-propenyl)-1,2,4-triazine 4-oxide 14a, b, 8a, b with 1-ethoxy-N,N-dimethyl-1-propenylamine (2b) affords the 2-(1,2,4-triazin-5-yl)-propionamides 17a, b. No reaction was observed between the 1,2,4-triazine 1-oxides 20a, b and 2a. The 1,2,4-triazine 4-oxides 8a-d are reduced by N,N-diethyl-1-propynylamine (4) to give the 1,2,4-triazines 3f-i, which react with excess 4 by a [4 + 2]-cycloaddition reaction to yield the pyrimidines 5a-c.
    Notes: Die 1,2,4-Triazin-4-oxide 8a-g reagieren mit 1-Ethoxy-N,N-dimethylvinylamin (2a) zu 5-Methyl-1,2,4-triazinen 3a-e, 6- und 5-(2-Dimethylamino-1-propenyl)-1,2,4-triazin-4-oxid 14a, b, 8a, b ergeben mit 1-Ethoxy-N,N-dimethyl-1-propenylamin (2b) die 2-(1,2,4-Triazin-5-yl)propionamide 17a, b. Zwischen den 1,2,4-Triazin-1-oxiden 20a, b und 2a konnte keine Reaktion beobachtet werden. Die 1,2,4-Triazin-4-oxide 8a-d werden durch N,N-Diethyl-1-propinylamin (4) zuerst zu den 1,2,4-Triazinen 3f-i reduziert, anschließend entstehen über eine [4 + 2]-Cycloaddition die Pyrimidinderivate 5a-c.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 3509-3517 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Hydrazidines, II. Synthesis of Pyrrolo[1,2-b]-1,2,4,5-tetrazinesThe reaction of acetohydrazide hydrazone hydrochloride (2) with 1,4-bifunctional compounds, like malealdehyde, derivatives of maleic acid (4, 6a-c), dichloro- (10a) or dibromomalealdehydic acid (10b), affords derivatives of the unknown pyrrolo[1,2-b]-1,2,4,5-tetrazines (3, 5, 11).
    Notes: Durch Reaktion von Acethydrazidin-hydrochlorid (2) mit 1,4-bifunktionellen Verbindungen, wie Maleindialdehyd, Maleinsäurederivaten (4, 6a-c). Dichlor- (10a) oder Dibrommaleinaldehydsäure (10b), werden verschiedene Vertreter der bisher unbekannten Pyrrolo[1,2-b]-1,2,4,5-tetrazine (3, 5, 11) erhalten.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 299-308 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of 2-Cyclopropen-1-yl Azides2-Cyclopropen-1-yl azides (1) react with dimethyl acetylenedicarboxylate (2) to yield 2-(2-cyclopropen-1-yl)-2H-1,2,3-triazoles (7). The reaction of 1 with N,N-diethyl-1-propynylamine (10) give either 2-(2-cyclopropen-1-yl)-2H-1,2,3-triazoles (13) and 3-(2-cyclopropen-1-yl)-3H-azirines (12) or pyridine derivatives (15), depending on the reaction conditions.
    Notes: Aus 2-Cyclopropen-1-yl-aziden 1 und Acetylendicarbonsäure-dimethylester (2) werden 2-(2-Cyclopropen-1-yl)-H2-1,2,3-triazole (7) erhalten. 2-Cyclopropen-1-yl-azide (1) liefern mit N,N-Diethyl-1-propinylamin (10) in Abhängigkeit von den Reaktionsbedingungen entweder 2-(2-Cyclopropen-1-yl)-2H-1,2,3-triazole (13) und 3-(2-Cyclopropen-1-yl)-3H-azirine (12) oder Pyridinderivate (15).
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 1981-1990 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Hydrazidines, III. Synthesis of 1,2,4,5-Tetrazino[3,2-a]isoindolesReaction of acetohydrazide hydrazone hydrochloride (1) with phthalaldehydic acid (5) yields 3-methyl-1,10b-dihydro-1,2,4,5-tetrazino[3,2-a]isoindol-6(4H)-one (8), which affords 1,2,4,5-tetrazino[3,2-a]isoindol-6(4H)-one (9a) by mild oxidation. 9a is also obtained by the reaction of 1 with the phthalic acid derivatives 6a, 7a, and 7b. Starting with 9a, the 1,2,4,5-tetrazino[3,2-a]isoindoles 12-15 are synthesized. Interaction of 1 and 3-nitrophthalic anhydride (6b) yields two isomeric nitro-1,2,4,5-tetrazino[3,2-a]isoindol-6(4H)-ones (9b,c). Oxidation of 9a or b with KMnO4 in methanol affords the 1,2,4,5-tetrazino 17a, b. Mild Oxidation of 9a with KMnO4 in water/trichloromethane yields a dimer (20), which dissociates in nitromethane into the radical 19.
    Notes: Durch Reaktion von Acetohydrazid-hydrazon-hydrochlorid (1) mit Phthaladehydsäure (5) wird 3-Methyl-1, 10b-dihydro-1,2,4,5-tetrazino[3,2-a]isoindol-6(4H)-on (8) erhalten das durch milde Oxidation in 3-Methyl-1,2,4,5-tetrazino[3,2-a]isoindol-6(4H)-on (9a) übergeführt wird. 9a entsteht auch aus 1 und den Phthalsäurederivaten 6a, 7a und 7b. Ausgehend von 9a werden die 1,2,4,5-Tetrazino[3,2-a]isoindole 12-15 synthetisiert. Aus 1 und 3-Nitrophthalsäureanhydrid (6b) werden zwei isomere Nitro-1,2,4,5-tetrazino[3,2-a]isoindol-6(4H)-one (9b, c) erhalten. Oxidation von 9a oder b mit KMnO 4 in Methanol ergibt die 1,2,4,5-Tetrazine 17a, b. Vorsichtige Oxidation von 9a mit KmnO4 in Wasser/Chloroform ergibt ein Dimeres (20), das in Nitromethan in das Radikal 19 dissoziiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 2807-2818 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of 1,2,4-Triazines, IX. Synthesis of Cyclopenta[e]-1,2,4-triazinesDerivatives 12a-f and 23a-c of the hitherto unknown cyclopenta[e]-1,2,4-triazine system 1 were prepared from cyclopentadienedicarboxylates 9a,b and amidrazones 10a-d or 14a-c, respectively.
    Notes: Vertreter 12a-f und 23a-c des bisher unbekannten Cyclopenta[e]-1,2,4-triazin-Systems 1 werden aus Cyclopentadiendicarbonsäureestern 9a,b und Amidrazonen 10a-d bzw. 14a-c dargestellt.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 3695-3703 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1.2.3-Triazines, IThe triaryl-substituted cyclopropenyl azides 3a-k form the triaryl-substituted 1.2.3-triazines 2a-k when heated in dimethylformamide. Diphenylcyclopropenyl azide (31) was rearranged to 4.5-diphenyl-1.2.3-triazine (21).
    Notes: Die triarylsubstituierten Cyclopropenylazide 3a-k bilden beim Erhitzen in Dimethyl-formamid die triarylsubstituierten 1.2.3-Triazine 2a-k. Durch Umlagerung des Diphenyl-cyclopropenylazids (31) wurde das 4.5-Diphenyl-1.2.3-triazin (21) erhalten.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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