Acylation and esterification of the aryloxide ligand in [AIMe(dbmp)2]. Crystal structures of [AIMe(dbmp)-(bhmap)], Hbhmap and OC(dbmp)But(Hdbmp = 2,6-di-tert-butyl-4-methylphenol, Hbhmap = 3-tert-butyl-2-hydroxy-5-methylacetophenone)

Abstract

The reaction of [AIMe(dbmp)₂](Hdbmp = 2,6-di-tert-butyl-4-methylphenol) with OC(Cl)Me leads to acylation of one of the dbmp ligands and affords [AIMe(dbmp)(bhmap)]1(Hbhmap = 3-tert-butyl-2-hydroxy-5-methylacetophenone). Hydrolysis of 1 yields uncomplexed Hbhmap 5. The Et, Prⁱ and Ph analogues of 1 and 5 have been obtained by the use of the appropriate acyl chloride. By contrast, the interaction of [AIMe(dbmp)₂] with OC(Cl)Bu^t results in the formation of OC(dbmp)Bu^t12 and [AlCl₂(dbmp){OC(Me)Bu^t}]13. The molecular structures of 1, 5 and 12 have been confirmed by X-ray crystallography.