A simple method for one-step preparation of the organoaluminum compounds R3Al, R2AlH, R2R'Al, and RR'AlH by the reaction of MAIH(4) M = Li, Na) with R(2)AlHal (Hal = Cl, Br) and (alpha-olefins (3-methylbut-1-ene, hex-1-ene, oct-1-ene, dec-1-ene) was proposed.