in diethyl ether (Ar or N2); addn. of iron complex to Et2O with LiAlH4, stirring for 15 min at room temp.; addn. to a mixt. of cold water and ethyl acetate, extn. with Et2O, drying (Na2SO4), evapn., column chromy. (Al2O3, petroleum ether/Et2O 10:1), evapn.;

in diethyl ether (Ar or N2); addn. of iron complex to Et2O with LiAlH4, stirring for 3 h at room temp.; addn. to a mixt. of cold water and ethyl acetate, extn. with Et2O, drying (Na2SO4), evapn., column chromy. (SiO2, Et2O), evapn.;

in diethyl ether (Ar or N2); addn. of Na2O2 to a soln. of iron complex in Et2O, stirring for at room temp.; addn. of water, addn. of aq. HCl, extn. with ether, washing with water, drying, evapn.;