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Synthesis 1985; 1985(8): 794-796
DOI: 10.1055/s-1985-31354
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Syntheses of 3(5)-Substituted-4-(N-methylanilino)-5(3)-aminopyrazoles by Reaction of β-Hydroxy-α-cyanoenamines with Hydrazines

Kazumasa Takahashi* , Kenichiro Shibasaki, Katsuyuki Ogura, Hirotada Iida
  • *Department of Synthetic Chemistry, Faculty or Engineering, Chiba University, Yayoi-cho, Chiba 260, Japan
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Publication Date:
17 September 2002 (online)

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Aminopyrazoles 3-5 are prepared by the reaction of β-hydroxy-α-cyanoenamines 2 with hydrazine hydrate and monomethylhydrazine.