in pentane Under protective gas; pentane solns. of trineopentylaluminum and AlBr3 are combined in an evacuated tube, refluxing (30 min, 60°C oil bath).; Evapn., distn. (short-path) or recrystn. from small vol. of pentane at -78°C, elem. anal., mol wt.;

in hexane Addn. of neopentyllithium to a suspn. of AlBr3 in hexane at 0°C in 20 min under protective gas, refluxing (3 h).; Vac. distn. of hexane, sepn. of Al-compd. from LiBr by flask to flask vac. distn. at 120°C. Short-path vac. distn., elem. anal., mol wt.;

in hexane byproducts: LiCl; Ar-atmosphere; addn. of LiCH2CMe3 to AlCl3 suspn. (during 1 h, 0°C), refluxing (36 h); evapn. (vac.), distn. (vac.);

1: neat (no solvent) 2: neat (no solvent) View Scheme

1: pentane View Scheme