Über die Wanderung der Carboxylatgruppe bei der Benzilsäureumlagerung. 26. Mitteilung über Reduktone und Tricarbonylverbindungen
✍ Scribed by Heike Rodé-Gowal; Hans Dahn
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- German
- Weight
- 556 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The benzilic acid rearrangement of ethyl α,β‐dioxo‐butyrate was studied by NMR.‐and UV.‐techniques. In weak alkaline media (pH < 10) the ester group is hydrolyzed first, then the carboxylate group migrates to form methyltartronate. The migration of the carboxylate group was proved by radioactive labeling. At higher pH‐values (pH > 11,5) the intakt ester group migrates, with ester hydrolysis occuring as a second step.
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