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ChemInform Abstract: Stereoselective Synthesis of α-Alkylated γ,δ- Unsaturated Amino Acids via Claisen Rearrangement of Chelated Enolates.

✍ Scribed by U. KAZMAIER; S. MAIER

Book ID: 112028009
Publisher: John Wiley and Sons
Year: 2010
Weight: 33 KB
Volume: 27
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199608215

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## Abstract Deprotonation of __N__‐protected amino acid allylic esters with LDA at −78°C and subsequent addition of a metal salt presumably results in the formation of a chelated metal enolate that undergoes Claisen rearrangement upon warming up to room temperature, giving rise to __γ,δ__‐unsaturat