1, 3-Dimethyl-2-triflato-1, 3, 2-diazaborolidine (3) reacts with various amines in a 1: 1 ratio with displacement of the triflato group and formation of triflate salts containing cations with tricoordinate boron. cup'-Bipyridyl in a 1: l molar ratio gives a salt containing a tetracoordinated boron atom. N, N, N', N'-Tetramethylethylenediamine on the other hand produces a 1: l adduct, which in CH2CI2 solution provides evidence for an equilibrium ...
