Equipe de Recherche Associée au C.N.R.S. n° 686, synthése et Physicochimie Organique, Université Paul Sabatier, 118, route de Narbonne - 31062 Toulouse cedex France
Abstract:
Mixed enolates (RO)2LiMgBr and (RO)2LiZnBr are obtained by addition of MgBr2 or ZnBr2 to the lithium enolate of 2,2-diMe pentanone-3 . The mixed magnesium enolate is further transformed to ROMgBr with an additional equivalent of MgBr2 while is unchanged by additional ZnBr2. The same mixed species are observed in the direct addition of preformed enolates.