Journal of Heterocyclic Chemistry p. 839 - 846 (2000)
Update date:2022-08-04
Topics:
Poschenrieder
Eckl
Stachel
Windt
Polborn
The 4-hydroxypyridones 7 and 3-hydroxypyridones 8/9 (azagrevellins) were prepared by reaction of the pyrrolidinetrione 4 and diazoalkanes. The ring enlargement proceeded by anionotropic [1,2]-rearrangement introducing carbon between C-3 and C-4 or, to a l
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