Abstract The interactions of organoaluminium reagents with the acetates of substituted propargyl alcohols have been considered as the most appropriate method to synthesize allenes. Studies have been carried out on the synthesis of vinyl-and di-allenes, employing both unsaturated and saturated trialkylalanes of different structures in the presence of FeCl 3 and CuCl. The structures of the compounds obtained have been determined by 1 H and ...