U. Jordis et al., New 2,5-diazabicyclo[2.2.1]heptanes and their application in the asymmetric addition of diethylzinc to benzaldehyde, MENDELEEV C, (4), 1999, pp. 147-148
New (1S,4S)-2,5-diazabicyclo[2.2.1]heptane derivatives synthesised by direc
ted ortho metalation result in enantioselectivities of up to 78% e.e. when
used as catalysts in the addition of diethylzinc to benzaldehyde.