Abstract
The development of new strategies for realizing the asymmetric
Baylis-Hillman reaction remains at the forefront of research
into this important organic reaction. This review gives a comprehensive
account of the work that has emanated from our group on the asymmetric
Baylis-Hillman reaction. Herein, the use of homochiral
electrophiles, Michael acceptors, and bases and double asymmetric
induction protocols as tools for the asymmetric Baylis-Hillman
reaction is discussed. The account also covers the application of
such protocols in natural product synthesis.
1 Introduction
2 Asymmetric Baylis-Hillman Reaction: A Personal Account
2.1 Homochiral Electrophiles
2.1.1 Sugar-Derived Aldehydes
2.1.2 Chiral 2,3-Epoxy Aldehydes
2.2 Homochiral Michael Acceptors
2.2.1 TADDOL Acrylates
2.2.2 Sugar-Derived Acrylates
2.2.3 A Sugar-Derived Lactone
2.3 Homochiral Catalysts
2.3.1 N-Methylprolinol as the Chiral
Catalyst
2.3.2 Other Chiral Catalysts
2.4 Double Asymmetric Induction
2.5 Applications
2.5.1 α-Methylene-β-hydroxylactones via an
Intramolecular Baylis-Hillman Reaction
2.5.2 Synthesis of Syributins
2.5.3 Sequential Baylis-Hillman Reaction and Ring-Closing Metathesis
as a Protocol for Sugar-Linked α,β-Unsaturated γ-Lactone
Library Generation
2.5.4 Synthesis of Non-natural Higher-Carbon Sugars
3 Conclusion
Key words
Baylis-Hillman reaction - asymmetric synthesis - aldehydes - acrylates - natural products
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