Thermal Diels–Alder Reactions of 3-(Benzoylamino)-6-(polyfluoroalkyl)pyran-2-ones – New Synthesis ofp-(Polyfluoroalkyl)anilines
作者:Nataliya A. Tolmachova、Igor I. Gerus、Sergey I. Vdovenko、Michael Essers、Roland Fröhlich、Günter Haufe
DOI:10.1002/ejoc.200600408
日期:2006.10
A new practical method for the regioselective synthesis of the N-benzoyl-4-(polyfluoroalkyl)anilines 5a–g by thermal Diels–Alder cycloaddition of 5-substituted 3-(benzoylamino)-6-(polyfluoroalkyl)pyran-2-ones 1a–e with fluorostyrenes 2 and 7, acetylenes 8a–c or vinyl ethers 10 and 13a and 13b is described. In the case of the reactions of pyrone 1a with cyclic vinyl ethers 13a and 13b, the dihydrobenzenes