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Synthesis 1995; 1995(6): 641-643
DOI: 10.1055/s-1995-3974
short paper
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4-Alkoxy-3-cyano-2(1H)-pyridones and 5-Alkoxyisoxazoles and Their Aryl Substituted and Annulated Derivatives from Acylketene O,S-Acetals

Makhan L. Purkayastha, Laxminarayan Bhat, Hiriyakkanavar Ila* , Hiriyakkanavar Junjappa1
  • *Department of Chemistry, North-Eastern Hill University, Shillong 793 003, Meghalaya, India, Fax +91(0364)227705
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Publication Date:
31 December 2000 (online)

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The title pyridones 2 and 5 and the isoxazoles 3 are obtained in moderate to good yields by cyclocondensation of the appropriate acylketene O,S-acetals 1 or 4 with cyanoacetamide and hydroxylamine hydrochloride, respectively, in the presence of sodium alkoxide/alkanol.

acylketene O,S-acetals - 4-alkoxy-3-cyano-2(1H)-pyridones - 5-alkoxyisoxazoles - acylketene dithioacetals - cyclocondensation