water in tetrahydrofuran; cyclohexane addn. of 2.0 mmol of the Al compound to 1.5 equiv. of LiCH(Cl)SiMe2Ph at -78°C, followed by warming the mixt. to 23°C, stirring at this temp. for 1 h, and treatment with water at 0°C; ext.; chromy. (silica gel, pentane); yields detd. by GLC; product distribution depends on reaction temp.;

N,N,N',N,-tetramethylethylenediamine; sec.-butyllithium 1.) THF, cyclohexane, -78 deg C 2.) THF, cyclohexane, -78 deg C then 23 deg C, 1 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;

1: With [Cu(N,N′-bis(2,6-diisopropylphenyl)-imidazol-2-ylidene)Cl] in tetrahydrofuran; toluene T=20°C; P=760.051 Torr; 24 h; Inert atmosphereGlovebox; 2: With hydrogenchloride; water in tetrahydrofuran; toluene T=0°C; Inert atmosphereGlovebox;

hydrogenchloride; diisobutylaluminium hydride 1) a) hexane/CH2Cl2, -25 deg C, 10 min, b) rt, 30 min, 2) THF, 0 deg C, 20 min; Yield given. Multistep reaction;

in tetrahydrofuran; diethyl ether; hexane; cyclohexane T=-100 - 40°C; Yields of byproduct given. Title compound not separated from byproducts;

in 1,2-dichloro-ethane T=25°C; 1.5 h;