H. Daeniker, J. Druey
1958
Citations
0
Influential Citations
10
Citations
Journal
Helvetica Chimica Acta
Abstract
Trifluoroacetic anhydride is a mild reagent for specifically rearranging heterocyclic N-oxides to the corresponding nuclear oxygenated heterocycles. 2-Cyanoquinol-4-one is thus obtained from 2-cyanoquinoline N-oxide, while two products are formed from 4-cyanoquinoline N-oxide, namely 4-cyanoquinol-2-one, and 3-hydroxy-4-cyanoquinoline. The structures of the new compounds have been confirmed by degradation.