Et2O in diethyl ether addn. of Fe-complex to the stirred soln. of Li2-butane in Et2O (molar ratio 1:2, -50°C), then stirring (3 h at -20°C), cooling to -78°C; filtration, dissolution (ether, -10°C), filtration, pptn. on cooling to -78°C, separating, drying (vac., slowly warming to-10°C), recrystn. (ether);

in various solvent(s) T=-50.1°C;

1) -130 deg C, 2) 0 deg C, ether; Yield given. Multistep reaction;

CuSPh in tetrahydrofuran 1.) -78 deg C to -15 deg C, 20 min, -15 deg C, 10 min, 2.) -15 deg C, 1 h;

diethyl ether

in tetrahydrofuran; diethyl ether

in diethyl ether; pentane addn. of soln. of Me3SnCl to soln. of Li-compound (prepd. in situ) at -120°C, warming to room temp.; shaking with water, drying and concn. of org. phase; anal. and GC;

CuSPh in tetrahydrofuran 1.) -78 deg C to -15 deg C, 20 min, -15 deg C, 10 min, 2.) -15 deg C, 1 h;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3924730', constants.ctx, '0')">lithium</a> <br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3587204', constants.ctx, '0')">tert.-butyl lithium</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1696894', constants.ctx, '0')">diethyl ether</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '969132', constants.ctx, '0')">pentane</a> <br />&nbsp;1)-78 deg C, 0.5h, 2) warmed to 25 deg C;&nbsp;<br /> &nbsp;