Heterocyclic Compounds
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ChemInform Abstract: Studies in the Synthesis of Xanthones: Synthesis of Furoxanoxanthone. Part 7.
First published: February 7, 1989
Abstract
The 3-acetoxy-4-haloxanthones (I) react with the cuprous salt (II) of an O-protected butynol, yielding the furanoxanthone (III).
ChemInform Abstract
The 3-acetoxy-4-haloxanthones (I) react with the cuprous salt (II) of an O-protected butynol, yielding the furanoxanthone (III). Similarly, the 1-bromo-2-hydroxyxanthone (IV) is converted to the furano-fused derivatives (V) and (VI). (Yields given in g).
