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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 107 (1974), S. 3962-3965 
    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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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 86 (1974), S. 412-413 
    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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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 3221-3223 
    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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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 3363-3369 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation of Chloropentacyanobenzene1, 3, 5-Trichloro-2,4,6-tricyanobenzene (2a) reacts with the sodium salts of β-ketoesters by exchange of two chlorine atoms to give the compounds 6a-c. Of these 6c, by partial saponification and decarboxylation, yields diethyl 6-chloro-1,3,5-tricyanobenzene-2,4-diacetate (9), which reacts with ethyl nitrite in dimethylformamide to give the dioxime 10. By Beckmann fragmentation of 10 with phosphorus pentachloride chloropentacyanobenzene (5) is obtained.
    Notes: 1. 3. 5-Trichlor-2.4.6-tricyan-benzol (2a) reagiert mit den Natriumsalzen von β-Ketoestern unter Austausch von zwei Chloratomen, wobei die Verbindungen 6a-c entstehen. Von diesen ergibt, 6c durch partielle Verseifung und Decarboxylierung 6-Chlor-1.3.5-tricyan-benzoldiessigsäure-(2.4)-diäthylester (9), der mit Äthylnitrit in Dimethylformamid zum Dioxim 10 reagiert. Aus 10 wird mit Phosphorpentachlorid durch Beckmann-Fragmentierung das Chlorpentacyanbenzol (5) erhalten.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 107 (1974), S. 2985-2991 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Enynes from Cyclooctatetraene Oxide7,8-Epoxy-1,3,5-cyclooctatriene (cyclooctatetraene oxide) (1) reacts with ethynylmagnesium bromides 2 to give the ethynyl-cycloheptatrienyl-carbinoles 3, which can be converted with thionyl chloride into the enynes 4.
    Notes: 7,8-Epoxy-1,3,5-cyclooctatrien (Cyclooctatetraenoxid) (1) reagiert mit Äthinylmagnesium-bromiden 2 zu den Äthinyl-cycloheptatrienyl-carbinolen 3, die mit Thionylchlorid in die Enine 4 übergeführt werden können.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 90 (1978), S. 142-142 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 13 (1974), S. 405-406 
    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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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 17 (1978), S. 127-128 
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1973 (1973), S. 1893-1909 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Valence Isomerizations of Tetramethylcyclobutene, IV1,2)trans-1,2,3,4-Tetramethyl-3,4-bis(phenylethynyl)cyclobutene (1) dimerizes on heating to form 5. The adducts, 7, 12, (13 + 14), and 25 are obtained in the presence of activated acetylenes, maleic anhydride, oxygen or sulfur. The structures of these adducts were deduced from spectroscopic data and have been proved in some cases by independent syntheses. The formation of the dimer 5 and that of the adducts can be explained by postulating the benzocyclobutadiene derivative 31 as intermediate.
    Notes: trans-1,2,3,4-Tetramethyl-3,4-bis(phenyläthinyl)cyclobuten (1) dimerisiert sich beim Erhitzen zu 5. In Gegenwart von aktivierten Acetylenen, Maleinsäureanhydrid, Sauerstoff oder Schwefel erhält man die Addukte 7, 12, (13 + 14) und 25. Die Strukturen dieser Addukte werden aus den Spektren abgeleitet und zum Teil durch unabhängige Synthesen bewiesen. Die Bildung des Dimeren 5 und die der Addukte wird mit einem aus 1 intermediär entstehenden Benzocyclobutadienderivat 31 erklärt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1973 (1973), S. 1339-1351 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of Polyenynes from Cyclooctatetraene DibromideCyclooctatetraene dibromide 1 reacts with ethynylmagnesium bromides 2 to give the substituted (3E,5Z,7Z,9E)-3,5,7,9-dodecatetraene-1,11-diynes 3, which can be converted into the corresponding all-trans-isomers 4. Spectral evidence for the structurs 3 and 4 is given and their complete hydrogenation to the long chain saturated hydrocarbons 5 by a simple route is described. The mechanism of this new reaction is discussed.
    Notes: Cyclooctatetraendibromid (1) bildet mit Äthinylmagnesiumbromiden 2 die substituierten (3E,5Z,7Z,9E)-3,5,7,9-Dodecatetraen-1,11-diine 3, die in die all-trans-Isomeren 4 übergeführt werden können. Neben den physikalischen Strukturbeweisen für 3 und 4 wird ihre vollständige katalytische Hydrierung beschrieben, mit der die entsprechenden langkettigen, gesättigten Kohlenwasserstoffe 5 präparative einfach zugänglich werden. Der Mechanismus der aufgefundenen Reaktion wird diskutiert.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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