acetone in pentane byproducts: isobutene; Me2CO was dropwise added to soln. of alane (1:1 molar ratio) in pentane at -75°C under N2 atmosphere, mixt. was allowed to warm to room temp., refluxed for 30 min; isobutene evolved was collected in a gas burette and analysed by GLC, solvent from the reaction mixt. was distilled off; hydrolysis of residue observed yielding i-PrOH, i-butanol, i-butane, hexane, and 1-hexene (extrn. with ether and analys by GLC);

acetone in pentane byproducts: isobutene; Me2CO was dropwise added to soln. of alane (1:1 molar ratio) in pentane at -75°C under N2 atmosphere, mixt. was allowed to warm to room temp., refluxed for 30 min; isobutene evolved was collected in a gas burette and analysed by GLC, solvent from the reaction mixt. was distilled off; hydrolysis of residue observed yielding i-PrOH, i-butanol, i-butane, hexane, and 1-hexene (extrn. with ether and analys by GLC);