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  • 1970-1974  (8)
  • 1965-1969
  • 1970  (8)
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  • 1970-1974  (8)
  • 1965-1969
Year
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 205-209 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Compounds with Urotropin Structure, XLVI Synthesis of the 6-Thia-l,3-diazaadamantane Ring System.A synthesis of the hitherto unknown 6-thia-l,3-diazaadamantane ring system starting from N-benzenesulfonyl-diallylamine (1), is described. The first stage of the synthesis is the sulfurdichloride addition to 1, resulting in Nbenzenesulfonyl-2,6-bis(chloromethyl)thiomorpho-line (2).2 was converted with alkali into N-benzenesulfonyl-2,6-dimethylenethiomorpholine (6) and subsequently oxidized to the sulfone 7. Addition of benzylamine followed by removal of the benzyl and the benzenesulfonyl groups yielded 9-thia-3,7-diazabicyclo[3.3.l]nonane 9,9-dioxide (11), which reacted with formaldehyde to produce 6-thia-l,3-diazaadamantane 6,6-di-oxide (12).
    Notes: Ausgehend von Benzolsulfonsäure-diallylamid (1) wird das bisher noch unbekannte 6-Thia-1.3-diaza-adamantan-Ringsystem synthetisiert, wobei im ersten Schritt die Schwefeldichlorid-Addition an 1 zu 4-Benzolsulfonyl-2.6-bis-chlormethyl-thiomorpholin (2) erfolgt. 2 wurde mit Alkali in 4-Benzolsulfonyl-2.6-dimethylen-thiomorpholin (6) und durch anschließende Oxydation in das Sulfon 7 übergeführt. Benzylamin-Addition an 7 und anschließende Abspaltung des Benzyl- und Benzolsulfonyl-Restes führte zum 9-Thia-3.7-diaza-bicyclo[3.3.1]-nonan-9.9-dioxid (11), das mit Formaldehyd das 6-Thia-s-l.3-diaza-adamantan-6.6-dioxid (12) lieferte.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 643-644 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 863-867 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Compounds with Urotropin Structure, XLVII. A New Syntheses of 1,2 - and 2, 6-Disubstituted Adamantanes
    Notes: Kondensation des Pyrrolidin-Enamins von Cyclohexanon-(4)-carbonsäure-(1)-äthylester (1) mit 2-Brommethyl-acrylsäureester liefert Adamantandion-(2.6)-carbonsäure-(1)-äthylester (2). Durch selective Reduktion der Carbonylgruppe in 6-Stellung entsteht aus 2 Adamantanon (2)carbonsäure-(1)-äthylester (7). 1-Brom-adamantandion-(2.6) (8) ist durch Silbersalzabbau der aus 2 erhaltenen Säure 5 zugänglich. Aus der Bromverbindung ist durch Reduktion Adamantandion-(2.6) (12) und durch Favorski-Reaktion Noradamantanon-(4)-carbonsäure-(1) (10) erhältlich.Condensation of the pyrrolidine enamine of ethyl 4-oxocyclohexane-1-carboxylate (1) with ethyl 2-(bromomethyl) acrylate yielded ethyl 2.6-dioxoadamantane-1-carboxylate (2). Selective reduction of the carbonyl group at the 6-position in 2 leads to ethyl 2-oxoadamantane-1-carboxylate (7). 1-Bromo-2.6-dioxoadamantane (8) is accessible by silver salt degradation of the acid 5 obtained from 2. The bromo compound is reduced to 2.6-dioxoadamantane (12) and undergoes the favorski reaction to yield 4-oxonoradamantane-1-carboxylic acid (10).
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 200-204 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Compounds with Urotropin Structure, XLV Cyclisations Starting from 1,3,5-TriaminocyclohexaneA new method for preparation in good yield of the isomeric 1,3,5-triaminocyclohexanes starting from 1,3,5-trinitrobenzene is reported. N, N′,N″-Tripropionyl-2,4,10-triazaadamantane (6) and N, N′,N″-tris(benzenesulfonyl)-2,4,10-triazaadamantane (9) could be obtained by condensation of l,3,5-tris(propionylamino)cyclohexane (5) and l,3,5-tris(benzenesulfonamido)cyclohexane (8) with triethyl orthoformiate. On the other hand, condensation of N-methyl-benzenesulfonamide with triethyl orthoformiate leads to ethoxy-bis(N-methylbenzenesulfonamido)methane (10).
    Notes: Eine neue, ergiebige Methode zur Herstellung der isomeren 1.3.5-Triamino-cyclohexane, ausgehend von 1.3.5-Trinitro-benzol, wird beschrieben. Durch Kondensation von 1.3.5-Tris-propionylamino-cyclohexan (5) und 1.3.5-Tris-benzolsulfonylamino-cyclohexan (8) mit Orthoameisensäure-triäthylester sind N.N′.N“-Tripropionyl- (6) und N.N′.N“-Tris-benzol-sulfonyl-2.4.10-triaza-adamantan (9) zugänglich. Die analoge Reaktion von N-Methyl-benzolsulfonamid mit Orthoameisensäureester führt dagegen zu äthoxy-bis-[N-methylbenzolsulfonylamino]-methan (10).
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 1088-1094 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the C-Acylation with DiacylaminesThe acylation of methyl ketones (1a-c) with N-methyldiacetamide, N-substituted monocyclic imides (2a-d), N-acyl lactams (4a-e) as well as a bicyclic imide (7) in the presence of sodium hydride to give 3a-f, 5a-e, 6a-c, and 8 is described.
    Notes: Die Acylierung von Methylketonen (1a-c) mit N-Methyl-diacetamid, N-substituierten monocyclischen Imiden (2a-d), N-Acyl-lactamen (4a-e) sowie einem bicyclischen Imid (7) in Gegenwart von Natriumhydrid zu 3a-f, 5a-e, 6a-c, und 8 wird beschrieben.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 82 (1970), S. 844-844 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 738 (1970), S. 42-45 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Bicyclo[3,l,0]hexane-2,4-dione System1,5-Dimethyl-bicyclo[3,l,0]hexane-2,4-dione (5) is prepared by cyclic ester condensation from methyl cis-2-acetyl-1,2-dimethylcyclopropanecarboxylate (4). With 20% enol the pK value amounts to 6.12. Acid cleavage is not found under the influence of alkali. Oxidative degradation leads to cis- 1,2-dimethylcyclopropane-1,2-dicarboxylic acid.
    Notes: 1.5-Dimethyl-bicyclo[3.l.0]hexandion-(2.4) (5) wird durch cyclisierende Esterkondensation aus cis-2-Acetyl-l.2-dimethyl-cyclopropancarbonsäure-methylester (4) hergestellt. Bei einem Enol-Gehalt von 20% beträgt der pK-Wert 6.12. Bei der Einwirkung von Alkali kann keine Säurespaltung beobachtet werden. Der oxydative Abbau ergibt cis-1.2-Dimethyl-cyclopropandicarbonsäure-(1.2).
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 9 (1970), S. 817-818 
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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