Synthesis of 1-acyl-5-pyrazolones and pyrrolidino[2,3-c]pyrazol-3-ones
β Scribed by Maria Teresa Cocco; Cenzo Congiu; Antonio Maccioni
- Book ID
- 112129580
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1990
- Tongue
- English
- Weight
- 204 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0022-152X
No coin nor oath required. For personal study only.
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## Abstract magnified image The unusual formation of 1βacylβ1,2βdihydroβ3__H__βpyrazolβ3βones starting from 3βacyloxypyrazoles by Friesβtype rearrangement is described. Under normal conditions, acylation of 2,4βdihydroβ3__H__βpyrazolβ3βones **1** and **2** with acid chlorides or anhydrides in the