of diethylamino propylchloride is used the resulting reaction product is obtained in the form of a light yellow oil boiling at 210 u00b0 c 0 04 mm hg 1 4 39 benzyloxy benzyl 2 phenyl piperazine prepared according to example 16 is alkylated by means of diethylamino ethylchloride by following the procedure described in example 3c the resulting reaction product is obtained in the form of a light yellow oil boiling at 235 u00b0 c 0 01 mm hg 1 3 39 4 39 5 39 trimethoxy benzyl 2 phenyl piperazine prepared according to example 17 is alkylated by means of diethylamine ethylchloride by following the procedure described in example 3c the resulting reaction product is obtained in the form of yellow oil boiling at 200 u00b0 c 0 03 mm hg 1 3 39 4 34 methoxy phenyl propyl 1 2 phenyl piperazine prepared according to example 18 is alkylated by means of diethylamino ethylchloride by following the procedure described in example 3c the resulting reaction product is obtained in the form of a yellow oil boiling at 180 u00b0 190 u00b0 c 0 01 mm hg 1 diethylamino ethyl 2 phenyl piperazine prepared according to example 8a is reacted with 4 ethoxy benzylchloride by following the procedure described in example 8b and using in place of 4 chloro benzylchloride the equimolecular amount of 4 ethoxy benzylchloride the resulting reaction product is obtained in the form of a yellow oil boiling at 200 u00b0 c 0 05 mm hg a 30 g of 1 4 39 chloro benzyl 2 phenyl.