Process for the preparation of isoflavones
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United States of America Patent
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Sep 19, 2006
Grant Date -
Aug 12, 2004
app pub date -
Apr 19, 2002
filing date -
Apr 25, 2001
priority date (Note) -
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Abstract
The invention relates to a process for the preparation of 2H-isoflavones which process comprises the reaction of a 2-hydroxyaryl alkyl ketone in the presence of a base with a formic-sulfuric anhydride salt which reaction is followed by neutralization. The procedure is especially suitable for the preparation of genistein.
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