pyridinium chlorochromate in dichloromethane T=20°C; 2 h;

aluminium trichloride 0 deg C, 1 h then 80 deg C, 2 h;

1: [Rh(.eta.6-C6H5F)(bis(dicyclohexylphosphino)methane)][B(C6H3-3,5-(CF3)2)4] / 1,2-dichloro-ethane / 2 h / 80 °C / |Inert atmosphere 2: 4-bromooctafluorobutanetriethoxysilane / 1,2-dichloro-ethane / 25 °C / |Inert atmosphere View Scheme

potassium hydroxide; hydrazine hydrate in diethylene glycol 130 deg C, 2 h then 200 deg C, 2 h;