Fluoro-1-phenyl-1-trimethylsiloxyethene reacted efficiently with aldehydes to give a-fluoro -hydroxy ke-tones in HMPA in the presence of Zn powder and CuCl.
Heating a mixture of 1, 3-diiodo-1 ,1,3, 3-tetrafluoropropane (2), K2CO3, pyridinium bromides (3) in CH3CN at 65℃ for 10 h gives the corresponding trifluoromethylindolizines.