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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 100 (1969), S. 163-174 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract 4-O-Methyl-7.8-dehydrometathebainonemethine (1) in alkaline solution rearranges to the naphthalene derivative3, which eliminates formiate to give7. The occurrence of3 was confirmed by isolation of13a after reduction with NaBH4. The hydroxy compounds8a and13a, obtained by reduction, eliminate methanol and cyclize to the 2.3-dihydronaphtho[1.8-bc]pyrans9 and14.
    Notes: Zusammenfassung 4-O-Methyl-7,8-dehydro-metathebainon-methin (1) geht in alkalischer Lösung in das Naphthalin-Derivat3 über, das unter Abspaltung von Formiat7 liefert. Das Auftreten von3 kann durch Isolierung von13a nach Reduktion mit NaBH4 nachgewiesen werden. Die aus3 und7 durch Reduktion erhaltenen Alkohole8a und13a werden in saurer Lösung unter Methanol-Abspaltung zu den 2,3-Dihydro-naphtho[1,8-bc]pyranen9 und14 cyclisiert.
    Type of Medium: Electronic Resource
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