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Synthesis of (-)-1-hydroxy-N-methylmorphinan-6-one and its O-methyl ether from (-)-4-hydroxy-N-formylmorphinan-6-one

✍ Scribed by Schmidhammer, Helmut; Brossi, Arnold


Book ID
127365435
Publisher
American Chemical Society
Year
1983
Tongue
English
Weight
410 KB
Volume
48
Category
Article
ISSN
0022-3263

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Synthesis of bipyrazoles and pyrazoloiso
✍ Abderrahman Bendaas; MaΓ’mar Hamdi; Nicole Sellier πŸ“‚ Article πŸ“… 1999 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 249 KB

## Abstract Phenylhydrazine or hydrazine react with 3‐acetyl‐4‐hydroxy‐6‐methyl‐2__H__‐pyran‐2‐one (1) to give 4‐acetoacetyl‐3‐methylpyrazolin‐5‐ones 4. The synthesis of bipyrazoles and pyrazoloisoxazoles from 4 are reported.