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New synthesis of 5,5-dimethyl-3-oxo-4,5-dihydro-3H-pyrrole 1-oxide

✍ Scribed by V. A. Golubev; V. D. Sen’

Book ID
111465432
Publisher
SP MAIK Nauka/Interperiodica
Year
2010
Tongue
English
Weight
187 KB
Volume
46
Category
Article
ISSN
1070-4280

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A new ring transformation: Synthesis of 5,5-dimethyl-3-oxo-1-pyrroline 1-oxides from 6,6-dimethyl-4-oxo-5,6-dihydro-1,2,4h-oxazines
✍ Christian Deshayes; Suzanne Gelin 📂 Article 📅 1981 🏛 Elsevier Science 🌐 French ⚖ 358 KB

The nitrosation of some y,&unsaturated B-diketo compounds affords the 3-substituted 4-oxo-5,6-dihydro-1,2,4ff-oxaxines. These compounds are converted to the isomeric 3-oxo-1-pyrroline l-oxides by a facile thermal rearrangement. In connection with our study of y,s-unsaturated 6-ketoesters1'2, we have