A new ring transformation: Synthesis of
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Christian Deshayes; Suzanne Gelin
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Article
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1981
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Elsevier Science
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French
β 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