hydrogen in methanol 70 bar H2, 75°C;

Pd/C in methanol 0.166667 h;

hydrazine in ethanol; water Ar-atmosphere; refluxing for 2 h; addn. of H2O, extn. (ether), drying (Na2SO4), evapn.;

in ethanol Ar, hydrazine added to a soln. of Fe compd., refluxed for 2 h; cooled to ambient temp., water added, extd. (diethyl ether), extract dried (Na2SO4), evapd. (vac.) to dryness; elem. anal.;

iron(III) oxide; copper(l) iodide; sodium hydroxide in ethanol T=90°C; 6 h; Green chemistry;

hydrogenchloride; tert.-butyl lithium in tetrahydrofuran; pentane byproducts: LiCl, N2, PhC(O)Me; under N2, ferrocene suspn. in THF cooled to 0°C, t-BuLi/pentane added, allowed to warm to ambient temp., stirred for 15 min, cooled to -70°C, α-azidostyrene added, allowed to warm to -10°C; aq. HCl added slowly, allowed to warm to ambient temp., poured into H2O,washed (ether), the H2O layer cooled to 0°C, aq. NaOH added slow ly; after 10 min the ppt. collected, rinsed (H2O), dried, sublimed at 120°C and 0.06 mmHg; elem. anal.;

in tetrahydrofuran under N2, Schlenk technique; Fe complex was dissolved in 1 M soln. of Bu4NF in THF, heated to 50°C for 15 min; solvent was removed, water and CH2Cl2 was added, org. layer sepd., aq. layer extd. with CH2Cl2, org. layers dried (MgSO4), filtered through silica, solvent removed, residue was recrystd. from CH2Cl2/petroleum ether; elem. anal.;

in isopropyl alcohol under Ar, Schlenk setup, iron compd. (2.87 mmol) suspn. heated at 60°C to complete dissolution, treated with Pd on charcoal (0.09 equiv.), H2 passed for 90 min, solvent evapd.; elem. anal.;

n-butyllithium in diethyl ether addn. of ferrocene to BuLi (in hexanes/Et2O), refluxing for 6 h, stirring for 12 h, drpowise addn. of benzylhydroxylamine at -22°C, warming to room temp. (for 45 min); fractional extn. into 0.1 M HCl at 0°C, addn. of 12 M NaOH to last two extracts (crystn.), filtration, drying (vac.); (1)H-NMR spectroscopy;

hydrogenchloride in tetrahydrofuran; diethyl ether N2-atmosphere; addn. of 2.5 equiv. BuLi to Fe-complex soln. (in THF/Et2O-1:1) at -70°C, warming to -50°C, treatment with excess CO2, warming to room temp., quenching with H2O, drying (vac.), dissoln. inMeOH, stirring with HCl overnight; dropwise addn. of diltd. NaOH to pH=8, extn. into Et2O, drying (MgSO4), solvent removal (vac.), chromy. (Al2O3);