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New 1-substituted 3,5-diaryl-2-pyrazolines 13-27 have been synthesized by the reaction of hydroxychalcones 1-12 and hydrazines in hot acetic acid solution.Structures of all new compounds have been elucidated by microanalyses, 1 H-and 13 C-NMR spectroscopy.
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Lévai et al. (2005) studied this question.
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