NH4NO3-NH3 in tetrachloromethane soln. of TiCl4 added to alcohol with cooling and stirring, soln. added to NH4NO3-NH3 with stirring and cooling at 0-15°C; organic layer separated, solvent removed, product distilled under vacuum;

Heating;

titanium tetrachloride in hexane; toluene 24 h; Ambient temperature;