Facile Preparation of 1,3-Selenazole-5-carboxylic Acids and the Carboxylates by Reaction of Selenazadienes with Chloroacetyl Chloride.
โ Scribed by Mamoru Koketsu; Takumi Mio; Hideharu Ishihara
- Publisher
- John Wiley and Sons
- Year
- 2004
- Weight
- 94 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0931-7597
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## Abstract The 1__H__โpyrazoleโ3โcarboxylic acid **2**, obtained from the furanโ2,3โdione **1** and __N__โBenzylideneโ__N__'โ(3โnitrophenyl) hydrazine, was converted via reactions of its acid chloride **3** with various alcohols or Nโnucleoโphiles into the corresponding ester or amide derivatives