sodium hydroxide in water Fe complex stirred vigorously in Et2O with aq. NaOH soln. for 10 min; separation of layers, washing with H2O, drying over MgSO4, evapn.;

sodium tetrahydroborate in diethyl ether; ethanol soln. of Fe complex in Et2O added to suspn. of NaBH4 in EtOH, mixture stirred for 0.5 h, poured into H2O; extn. (Et2O), washing with H2O, drying over MgSO4, evapn.;

sodium tetrahydroborate in diethyl ether; ethanol soln. of Fe complex in Et2O added to suspn. of NaBH4 in EtOH, mixture stirred for 0.5 h, poured into H2O; extn. (Et2O), washing with H2O, drying over MgSO4, evapn.;