ausblenden:
Schlagwörter:
aldehydes; asymmetric epoxidation; chiral phosphates; enals; organocatalysis
Zusammenfassung:
A new mode of chiral anion catalysis: A powerful chiral‐counteranion strategy for catalytic asymmetric epoxidations using the newly discovered catalyst 1 has been applied to the epoxidation of α,β‐unsaturated aldehydes together with tert‐butyl hydroperoxide as the oxidant (see scheme). Remarkably, this system provides the corresponding epoxides in high diastereo‐ and enantioselectivity for both di‐ and trisubstituted enals.
