作者:Kirill N. Zelenin、Valery V. Alekseyev、Alja R. Tygysheva、Stanislav I. Yakimovitch
DOI:10.1016/0040-4020(95)00672-u
日期:1995.10
The use of β-diketones with strong electron-withdrawing substituents in reaction with hydrazine and its monosubstituted derivatives leads to the stable intermediates of pyrazole synthesis — 5-hydroxy-4.5-dihydropyrazoles or their open chain isomers.