... dependent for aziridine esters (2S,3R)-1 and (2R,3S)-4,
but was also influenced by solvent (Scheme 2).11 The retention product always predominated for trisubstituted
aziridine esters 1 with CH2Cl2 giving the best selectivity.
For the tetrasubstituted aziridine esters 4, use of hexane as
solvent with ...