Aminosäureester als chirale Hilfsgruppen
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Waldmann, Herbert
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Article
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1991
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John Wiley and Sons
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English
⚖ 622 KB
Amino Acid Esters as Chiral Auxiliaries in Barbier‐Type Reactions in Aqueous Solution Valine and proline benzyl ester are converted into the aliphatic and aromatic α‐oxo amides 5 by activation of the respective α‐oxo acid by means of __N,N__′‐diisopropylcarbodiimide. The α‐oxo amides 5 undergo Barb