1: 1,1,1,3,3-pentafluoropropane With n-butyllithium in diethyl ether; hexane T=-15 - -10°C; procedure of Brisdon; 0.166667 h; 2: triphenylstannyl chloride in diethyl ether; hexane T=-10 - 20°C; 4 h;

n-BuLi in diethyl ether under N2 atm. soln. CF3CH2CF2H in Et2O at -10°C was treated with n-BuLi, after 10 min Ph3SnCl in Et2O was added and stirred at 0°Covernight and warmed to room temp.; hexane was added, soln. was filtered, concd. in vacuo, and chromed. on silica; elem. anal.;