Communication
Catalytic Enantio- and Diastereoselective Aldol Reactions of Glycine-Derived Silicon Enolate with Aldehydes: An Efficient Approach to the Asymmetric Synthesis of anti-β-Hydroxy-α-Amino Acid Derivatives
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Abstract

We have developed an efficient method for the asymmetric synthesis of anti-β-hydroxy-α-amino acid derivatives based on highly enantio- and diastereoselective aldol reactions of the silicon enolate derived from N-trifluoroacetylglycinate with aldehydes using a chiral zirconium catalyst. The resulting N-trifluoroacetyl group is easily cleaved under either acidic or basic conditions and can be used directly as a protecting group for further transformations.
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History
- Published In Issue August 04, 2004
- Received April 26, 2004
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