iron (III) acetylacetonate; ethylene dibromide in tetrahydrofuran T=20°C; 3 h; Inert atmosphere;

1: iodobenzene; isopropylmagnesium chloride in tetrahydrofuran T=0°C; 0.333333 h; Inert atmosphere; 2: With methylzync chloride in tetrahydrofuran T=20°C; 0.25 h; Inert atmosphere; 3: di(isobutyl)zinc With iron (III) acetylacetonate; ethylene dibromide in tetrahydrofuran T=20°C; 3 h; Inert atmosphere;

1: iodobenzene; isopropylmagnesium chloride in tetrahydrofuran T=0°C; 0.333333 h; Inert atmosphere; 2: With methylzync chloride in tetrahydrofuran T=20°C; 0.25 h; Inert atmosphere; 3: di(isobutyl)zinc With iron (III) acetylacetonate; ethylene dibromide in tetrahydrofuran T=20°C; 3 h; Inert atmosphere;

iron (III) acetylacetonate; ethylene dibromide in tetrahydrofuran T=20°C; 3 h; Inert atmosphere;

1: iodobenzene; isopropylmagnesium chloride in tetrahydrofuran T=0°C; 0.333333 h; Inert atmosphere; 2: With methylzync chloride in tetrahydrofuran T=20°C; 0.25 h; Inert atmosphere; 3: di(isobutyl)zinc With iron (III) acetylacetonate; ethylene dibromide in tetrahydrofuran T=20°C; 3 h; Inert atmosphere;

iron (III) acetylacetonate; ethylene dibromide in tetrahydrofuran T=20°C; 3 h; Inert atmosphere;

zinc-copper couple in further solvent(s) charging of Schlenk flask with Zn-Cu couple; addn. of small amt. of 2-iodobutane and 2-bromobutane at 50°C with stirring; heating to 95°C; warming to room temp., addn. dropwise of halide mixt. for 3 h; stirring overnight at ambient temp.; evapn.; distn. at 1E-3 mbar and -196°C; heating to 100°C and then to 140°C;

in diethyl ether; cyclohexane byproducts: LiCl; soln. of sec-butyllithium in cyclohexane filtered through celite, cooledto 0° C, concentrated in vacuo, cooled to -78°C, soln. of ZnCl2 in Et2O added; resulting soln. allowed to warm up slowly, stirred overnight; LiCl ppt. removed from the soln. by decantation, filtration or centrifugation; detn. by iodometric titration;

in not given