Heilmittelchemische Studien in der heterocyclischen Reihe. 24. Mitteilung. Über die Umlagerung heterocyclischer N-Oxyde mit Trifluor-acetanhydrid
作者:H. U. Daeniker、J. Druey
DOI:10.1002/hlca.19580410723
日期:——
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
三氟乙酸酐是一种温和的试剂,用于将杂环N-氧化物特异性地重排为相应的核氧合杂环。因此,由2-氰基喹啉N-氧化物获得2-氰基喹啉-4-酮,而由4-氰基喹啉N-氧化物形成两种产物,即4-氰基喹啉-2-酮和3-羟基-4-氰基喹啉。新化合物的结构已通过降解得到证实。