PAGE et al, 2006. Non-aqueous iminium salt mediated catalytic asymmetric epoxidation. Tetrahedron 62 (28), pp. 6607-6613
A range of substituted dihydroisoquinolinium salts has been tested in the catalytic
asymmetric epoxidation of simple alkenes using our newly developed non-aqueous conditions
employing tetraphenylphosphonium mono-peroxysulfate (TPPP) as oxidant, giving ees of up to 97%.