Methode zur Bestimmung von Diffusionskoe
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R. Jeanneret; F. Grün
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Article
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1958
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John Wiley and Sons
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German
⚖ 874 KB
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-%