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Synthesis 2001; 2001(4): 0581-0584
DOI: 10.1055/s-2001-12361
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Eco-Friendly Transamination and Aza-Annulation Reactions: Solvent-Free Synthesis of New α-Hetero-β-Hydrazino Acrylates and 1,2-Dihydropyrazol-3-ones

Nadia Meddad* , Mustapha Rahmouni, Aïcha Derdour, Jean Pierre Bazureau, Jack Hamelin
  • *Institut de Chimie, Université d'Oran Es-senia, 31000 Oran, Algérie; Fax + 33(2)99 28 63 74; E-mail: Jean-Pierre.Bazureau@univ-rennes1.fr
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Publikationsdatum:
31. Dezember 2001 (online)

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Ethyl 3-dimethylamino acrylates 1 a - c have been used as starting materials to develop an efficient and mild solvent-free preparation of new ethyl β-hydrazino acrylates 3 a - h and 1,2-dihydropyrazol-3-ones 4 a -c in good yields from a variety of hydrazines 2 a - d by transamination and aza-annulation reactions under microwave irradiations.

β-hydrazino acrylates - pyrazol-3-ones - transamination - aza-annulation - microwave irradiations - condensation - heterocycles