Abstract
The C-tert-butyl substituted azacyclopropenylaluminate, [(SiN(Dipp))-Al-η(2)-{NCt-Bu}-K](∞) (SiN(Dipp) = (CH(2)SiMe(2)NDipp)(2)) reacts with both aryl- and alkyl-substituted nitriles. In contrast to previously reported attempts to effect C-C bond formation between two dissimilar nitriles, these reactions enable the completely discriminating heterocoupling of t-BuCN to provide diazabutadienylaluminate dianions that bear two differentiated NC substituents.