magnesium in tetrahydrofuran under Ar, soln. of Br-compd. added slowly to Mg in THF with refluxing, refluxed for 1 h, cooled to room temp., soln. of Me3SnCl added within 1 h, stirred for several h; ether and saturated NH4Cl-soln. added, organic layer dried over MgSO4, fractionated at the water pump, elem. anal.;

PhCH2Pd(PPh3)2Cl in benzene 24 h; Heating;