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  • Organic Chemistry  (3)
  • 1970-1974  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 761 (1972), S. 130-136 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Nucleophilic Substitution of 5-Nitro-2-furaldehydeNucleophiles (sodium azide and sodium arylmercaptides) react with 5-nitro-2-furaldehyde (1) via replacement of the nitro group to give 5-azido-2-furaldehyde (2) and 5-arylthio-2-furaldehydes 5a-f. Enamines and amines add to 1 to produce the furfurylidenecycloalkanones 9 and the aminals 12.
    Notes: Nucleophile (Natriumazid und Natriumarylmercaptide) reagieren mit 5-Nitro-2-furfurol (1) unter Austausch der Nitrogruppe zu 5-Azido-2-furfurol (2) bzw. 5-Arylmercapto-2-furfurolen 5a-f. Enamine und Amine bilden mit 1 die Furfuryliden-cycloalkanone 9 und die Aminale 12.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 765 (1973), S. 55-77 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Open-chain and Cyclic α-Nitrosaminoalkyl EthersIn a one-step reaction with partially very good yields 2-, 3- and 4-amino-1-alcohols have been transformed with aldehydes and nitrous acid to the corresponding N-nitroso-1,3-oxazolidines, N-nitrosotetrahydro-1,3-oxazines or N-nitroso-1,3-oxazepines 8. Primary aliphatic, aromatic, araliphatic and heterocyclic amines react with aldehydes in presence of primary or secondary alcohols and nitrous acid to give new open-chain α-nitrosaminoalkyl ethers of general formula 12. The structures of these new substances have been determined and some of their reactions are described.
    Notes: 2-, 3- und 4-Amino-1-alkohole wurden in einer Eintopfreaktion in teilweise sehr guten Ausbeuten mit Aldehyden und salpetriger Säure in die entsprechenden N-Nitroso-1.3-oxazolidine, N-Nitroso-tetrahydro-1.3-oxazine oder N-Nitroso-1.3-oxazepine 8 übergeführt. Primäre aliphatische, aromatische, araliphatische und heterocyclische Amine reagieren mit Aldehyden in Gegenwart von primären oder sekundären Alkoholen und salpetriger Säure zu den noch nicht beschriebenen offenkettigen α-Nitrosaminoalkyl-äthern 12, deren Struktur bewiesen und deren Reaktivität untersucht wird.
    Additional Material: 4 Tab.
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  • 3
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: N-Substituted 1,3-Oxazolidines and N-Substituted Tetrahydro-1,3-oxazines from N-Nitroso-1,3-oxazolidines and N-Nitrosotetrahydro-1,3-oxazinesN-Nitroso-1,3-oxazolidines and N-nitrosotetrahydro-1,3-oxazines react with halogen compounds such as phosgene, chloroformic acid esters, oxalyl chloride, chlorocarbonyl isocyanate, chloroacetyl chloride, dichloroacetyl chloride, toluenesulfonyl chloride, and cyanuric chloride to give N-substituted 1,3-oxazolidines or N-substituted tetrahydro-1,3-oxazines and nitrosyl chloride.
    Notes: Bei der Umsetzung von N-Nitroso-1.3-oxazolidinen und N-Nitroso-tetrahydro-1.3-oxazinen mit reaktiven Halogenverbindungen wie Phosgen, Chlorameisensäureester, Oxalylchlorid, Chlorcarbonylisocyanat, Chloracetylchloriden, Toluolsulfonsäurechlorid und Cyanurchlorid werden unter Bildung von Nitrosylchlorid N-substituierte 1.3-Oxazolidine und Tetrahydro-1.3-oxazine erhalten.
    Additional Material: 9 Tab.
    Type of Medium: Electronic Resource
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