Abstract
An efficient preparation of novel 2-amino-3-phenylsulfonyl-4H-pyrans derivatives is reported by the condensation of aromatic aldehydes, dimedone and phenylsulfonylacetonitrile in the presence of 2-hydroxyethyl ammonium acetate [H3N+CH2CH2OH] [CH3COO-] (HEAA) as suitable and efficient catalyst. This method offers some distinct advantages such as short reaction time, high yields, and simple procedure.
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