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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 2746-2753 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Deamination Reactions, 15. Rearrangements of 1-Substituted Apobornyldiazonium IonsApocamphor tosylhydrazones carrying nitrogen and oxygen functions in position 1 (10-14) afforded nopinone (21) and camphenilone (22) in variable yields when photolyzed in aqueous sodium hydroxide. Almost complete rearrangement to the bicyclo[3.1.1]heptane series has been achieved with 10 (1-NH2)). Product ratios depending on the concentration of base were observed with 1-acylamino groups (11, 12). Products 21 and 22 were obtained from 11 without racemization which might be caused by 6.2 hydride shifts. The product ratios are explained in terms of concerted reactions of endo- and exo-apobornyldiazonium ions (16 and 18).
    Notes: Apocampher-tosylhydrazone, die in 1-Stellung Stickstoff- und Sauerstoff-Funktionen tragen (10-14), ergaben bei Belichtung in wäßriger Natronlauge Nopinon (21) und Camphenilon (22) in wechselnden Mengenverhältnissen. Nahezu vollständige Umlagerung in die Bicyclo[3.1.1]heptan-Reihe wurde bei 10 (1-NH2) erzielt; mit 1-Acylamino-Gruppen (11, 12) war das Produktverhältnis von der Basenkonzentration abhängig. Aus 11 erhaltenes 21 und 22 zeigte keine Racemisierung durch 6.2-Wasserstoffverschiebung. Die Produktverhältnisse werden durch Synchronreaktionen der endo- und exo-Apobornyldiazonium-Ionen (16 und 18) erklärt.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 2738-2745 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Deamination Reactions, 14. Bornyl- and Fenchyldiazonium Ions in Alkaline MediaBornyl- and fenchyldiazonium ions have been generated by photolysis of camphor benzenesulfonylhydrazone (11) and fenchone p-toluenesulfonylhydrazone (17), respectively, in aqueous sodium hydroxide and in methanol/sodium methoxide. Under these conditions, rearrangement from the bornane to the pinane series has been demonstrated by the detection of pinene hydrates, 27 and 28 (R = H), and of their methyl ethers (R = CH3). The product ratios require the intervention of two stereoisomeric, interconvertible pinyl cations.
    Notes: Bornyl- und Fenchyldiazonium-Ionen wurden durch Belichtung von Campher-benzol-sulfonylhydrazon (11) und Fenchon-p-toluolsulfonylhydrazon (17) in Natronlauge oder Methanol/Natriummethylat erzeugt. Unter diesen Bedingungen konnte die Umlagerung von der Bornan- in die Pinanreihe erstmals durch den Nachweis der Pinenhydrate 27 und 28 (R = H) und ihrer Methyläther (R = CH3) gesichert werden. Die Produktverhältnisse fordern das Auftreten stereoisomerer Pinyl-Kationen, die sich ineinander umlagern.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 9 (1970), S. 165-166 
    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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