Nuclear oxidation in flavones and related compounds - Part XLII. A synthesis of 6-hydroxy pyrylium salts of the gesneridin type
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Polyhydroxy benzadehydes are prepared by nuclear oxidation ofo-hydroxy benzaldehyde derivatives with alkaline persulphate and condensed withp-hydroxy andp-methoxy acetophenones to yield 6-hydroxy pyryium salts.
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