Abstract
This article describes a number of catalytic methods for enantioselectively desymmetrizing
prochiral dienone systems. The core structures obtained using these methodologies
appear in several bioactive natural products, and the processes appear to be effective
tools for producing key intermediates in the synthesis of complex structures.
1 Introduction
2 Covalent Organocatalyzed Desymmetrizations
2.1 Formation of Chiral Enamines
2.2 The Stetter Reaction
2.3 Other Covalent Desymmetrizations
3 Noncovalent Organocatalyzed Desymmetrizations
4 Transition Metals
5 Cycloadditions
6 Conclusion
Key words
prochiral dienone - phenol dearomatization - desymmetrization - enantioselective catalysis