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Faculty of Applied Chemistry, Chonnam National University, Gwangju 500-757, KoreaReceived October 9, 2003Key Words : Baylis-Hillman acetates, Isoxazolidin-5-ones, N-Alkylhydroxylamines, Lithium perchlorateRecently, we have reported the regioselective synthesis of1,3,4,5-tetrasubstituted pyrazoles from Baylis-Hillmanadducts.

A Facile Synthesis of 4-Arylidene-2-substituted Isoxazolidin-5-ones from Baylis-Hillman Acetates