Abstract
One-pot preparation of a variety of pharmacologically pertinent xanthone heterocycles has efficiently been achieved from their respective phenol compounds and salicylic acid/ thiosalicylic acid in the presence of the catalytic amount of heteropoly acid. Most of the reactions showed high regioselectivity and produced xanthones/ thioxanthones in good yields under microwave irradiation. Keywords: Xanthone, heteropoly acid, thioxanthone, green chemistry, salicylic acid, thiosalicylic acid.
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