cyclometallation of olefins and acetylenes with alkylalanes in the presence of Cp,ZrCi,, to
give in one stage high yields of 3-substituted aluminacyclopentanes and aluminacyclopentenes.
Applications of these reactions to a wide range of linear and cyclic olefins and to those
containing functional substituents have been studied. The transformation of the
aluminacyclopentanes thus … a novel route for the synthesis of aluminium-containing …