21780-04-1

A mixture of 32 g (0.27 mol) of thionyl chloride and 32 g (0.24 mol) of aluminum trichloride is saturated with 6 L (0.27 mol) of ethylene. The reaction mixture is hydrolyzed with water and the resulting byproducts are extracted with benzene. The residue is extracted with diethyl ether, which is then dried over magnesium sulfate and evaporated in vacuo. The yield is 98%.