Synthesis and transformations of metallocycles 16. Synthesis of a novel class of acyclic organoaluminum compounds, threo-2,3-disubstituted 1,4-dialumobutanes, with the use of zirconium catalysts

Article abstract of DOI:10.1007/BF00714441

A novel regio-and stereoselective method for synthesizing threo-2,3-disubstituted 1,4-alumobutanes from α-olefins and haloalanes (Et2AlCl, (Et2N)2AlCl, (EtO)2AlCl, Buⁱ2AlCl) with the participation of catalytic amounts of Cp2ZrCl2 or ZrCl4 in the presence of magnesium metal was developed.The products of hydrolysis and deuterolysis of the dialuminum compounds obtained have a threo-configuration.The selective transformations of 1,4-dialumobutanes to trans-3,4-disubstituted tetrahydrothiophenes, trans-1,2-disubstituted cyclobutanes, and disubstituted α,ω-dienes were found to be possible. - Keywords: organoaluminum compounds, zirconacyclopentanes, zirconium catalysts, cycloalkanes, tetrahydrothiophenes, magnesium, olefins, alkoxides, amides