7-hydroxychromone-8-aldehydes and their conversion into chromono-7: 8-α-pyrones
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Starting from 3-methoxy-7-hydroxyflavone, 2-methyl-3-methoxy-7-hydroxychromone and 7-hydroxyflavone aldehydes have been prepared. In these compounds the aldehyde groups occupy the eighth positions. By the action of sodium acetate and acetic anhyrdide the corresponding chromono-and flavono-α-pyrones have been synthesised.
KeywordsAcetic Anhydride Hexamethylenetetramine Anhydrous Sodium Acetate Alcoholic Ferric Chloride Eighth Position
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