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Year 2005, Month 1 (Section Full Articles, Page 220)

Synthesis of 5-substituted 4-aminoalkylpyrazol-3-ones (isoxazol-3-ones) from 3-acyllactams

V. G. Nenajdenko,* E. P. Zakurdaev, A. M. Gololobov, and E. S. Balenkova

Structurally various 3-acyllactams act as 1,3
bielectrophiles in heterocyclization reactions with a variety of hydrazines and hydroxylamines to give aminoalkylpyrazolones andisoxazolones in high yields.

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