The design of C₂-chiral bases with dual basic sites predicted to exceed the range of superbasicity: a computational study

A set of C 2 -chiral bases with bis-protonation sites (1–9) on dimethyl-binaphthalene derivatives have been explored using the B3LYP/6-311+G(d,p) level and the proton affinities calculated are in the range of superbases for both the sites.