in cyclohexane Heating;

T=800°C; P=0.08 Torr; Yield given;

T=800°C; P=0.08 Torr; Yield given;

acetic acid; zinc

magnesium; ethylene dibromide in tetrahydrofuran byproducts: ethylene; Ar atmosphere; to a suspn. of Mg in THF was added 1,2-dibromoethane, after evolution of C2H4 mixt. was stirred for 5 min and GeMe3Cl was added followed by slow addn. of the ligand in THF maintaining the temp. close to 40°C, stirred at room temp.; the solvent was removed in vac., the residue extd. with hexane, the filtrate was washed with HCl, dried (Na2CO3) and concd., distn.; elem. anal.;

hydrogenchloride; sulfuric acid 12 h; Ambient temperature;

1: diethyl ether; benzene; LiAlH4 2: aqueous HCl View Scheme

lithium aluminium tetrahydride; zinc(II) chloride in tetrahydrofuran T=0 - 20°C; Product distribution; Further Variations:ReagentsTemperatures;

1: zinc-powder; acetic acid 2: acetic acid; paraformaldehyde; aqueous H3PO4; aqueous HCl 3: zinc-powder; acetic acid View Scheme

magnesium; ethylene dibromide 1.) THF 2.) THF, 40 deg C then rt, 15 h; Yield given. Multistep reaction;