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Darzens Reaction Promoted by KF/Alumina: A Novel Stereoselective Method for Rapid and Efficient Synthesis of trans-α,β-Epoxy Ketones.

✍ Scribed by Ali Sharifi; Roghiyeh Salimi; Mojtaba Mirzaei; M. Saeed Abaee

Publisher: John Wiley and Sons
Year: 2007
Weight: 21 KB
Volume: 38
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200745100

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## Abstract A novel method for the asymmetric synthesis of __α__,__β__‐diamino acids by using the 2,3,4,6‐tetra‐__O__‐pivaloyl‐__β__‐D‐glucopyranosyl group (Piv~4~Glc) as chiral auxiliary was developed (__Table__ and __Scheme__). The reaction was promoted by CuBr⋅Me~2~S as __Lewis__ acid, and high