SCHEDULED MAINTENANCE
N′-Aroyl- or N′-acetyl, N′-phenyl- or N′-methyl-hydrazino-derivatives (1) of 1,3-dicarbonyl compounds can be converted by mild base treatment into 5-aryl- or 5-methyl-, 1-phenyl- or 1-methylpyrazoles carrying an acyl or alkoxycarbonyl group at C-4.
F. S. Al-Saleh, I. K. Al Khawaja and J. A. Joule, J. Chem. Soc., Perkin Trans. 1, 1981, 642 DOI: 10.1039/P19810000642
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