potassium fluoride; 18-crown-6 ether in tetrahydrofuran T=0°C; 33.5 h;

iron tribromide in toluene T=130°C; Wagner-Meerwein Rearrangement; 14 h; Sealed tubeSchlenk techniqueInert atmosphere; chemoselective reaction;

1: sodium hexamethyldisilazane / |Inert atmosphere; |Schlenk technique 2: diisobutylaluminium hydride / |Inert atmosphere; |Schlenk technique 3: iron tribromide / toluene / 14 h / 130 °C / |Sealed tube; |Schlenk technique; |Inert atmosphere View Scheme

1: diisobutylaluminium hydride / |Inert atmosphere; |Schlenk technique 2: iron tribromide / toluene / 14 h / 130 °C / |Sealed tube; |Schlenk technique; |Inert atmosphere View Scheme