Pa. Bentley et al., ASYMMETRIC EPOXIDATION OF ENONES EMPLOYING POLYMERIC ALPHA-AMINO-ACIDS IN NONAQUEOUS MEDIA, Chemical communications, (8), 1997, pp. 739-740
Urea-hydrogen peroxide complex in an organic solvent and in the presen
ce of DBU and poly-(L)-leucine causes rapid asymmetric epoxidation of
the enones 1a, b and d.