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  • 1,4-Benzodioxanes  (1)
  • Wiley-Blackwell  (1)
  • Springer
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1989 (1989), S. 1147-1151 
    ISSN: 0170-2041
    Keywords: Benzofurans ; 1,4-Benzodioxanes ; Coupling, stereocontrolled oxidative ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Regioselektive Synthese von 2-und 3-Aryl-1,4-benzodioxanenFür die Synthese natürlich vorkommender Flavano- und Neolignane eignen sich in hervorragender Weise 3-Aryl- bzw. 2-Aryl-1,4-benzodioxan-Verbindungen des Typs 4d und 5d als Ausgangsstoffe. Ihre Synthese gelang mit hoher Regioselektivität durch oxidative Kupplung von Kaffeesäure-ethylester (2h) und Coniferylalkohol (1c) mit Silber-Salz (Oxid, Carbonat) bzw. Kaliumhexacyanoferrat(III).
    Notes: 3-Aryl- and 2-aryl-1,4-benzodioxane derivatives of type 4d and 5d are excellent starting compounds for the synthesis of natural flavano- and neolignans. The syntheses of 4d and 5d were achieved with high regioselectivity by oxidative coupling of caffeic acid ethyl ester (2h) and coniferyl alcohol (1c) in the presence of a silver salt (oxide, carbonate) and potassium hexacyanoferrate(III), respectively.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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