in diethyl ether

hydrogenchloride; sodium hydroxide; ammonium acetate in methanol; diethyl ether; water redn. of ferrocene with NaBH4 in boiling abs. MeOH contg. AcONH4 for 6 h (N2); removal of solvent, addn. of water (pH 8-9, NaOH); extn. of free base with Et2O, drying; treatment with dry Et2O satd. with dry HCl gas; recrystn. from abs. MeOH, briefly treated with dry HCl gas; elem. anal.;