SYNTHESIS AND TRANSFORMATIONS OF METALLOCYCLES .16. SYNTHESIS OF A NOVEL CLASS OF ACYCLIC ORGANOALLUMINUM COMPOUNDS, THREO-2,3-DISUBSTITUTED L,4-DIALUMOBUTANES, WITH THE USE OF ZIRCONIUM CATALYSTS

A novel regio- and stereoselective method for synthesizing threo-2,3-d isubstituted 1,4-dialumobutanes from alpha-olefins and haloalanes (Et( 2)AlCl, (Et(2)N)(2)AlCl, (EtO)(2)AlCl, Bu(2)(i)AlCl) with the particip ation of catalytic amounts of Cp(2)ZrCl(2) or ZrCl4 in the presence of magnesium metal was developed. The products of hydrolysis and deutero lysis of the dialuminum compounds obtained have a threo-configuration. The selective transformations of 1,4-dialumobutanes to trans-3,4-disu bstituted tetrahydrothiophenes, trans-1,2-disubstituted cyclobutanes, and disubstituted alpha,omega-dienes were found to be possible.