## Abstract A number of activated esters of amino acid and peptide derivatives were reacted with various organic amines, including amino acid esters. The good yields obtained, and the mild reaction conditions make it seem possible that the activated ester method of acylation may be of good use in p
Über aktivierte Ester. I. Aktivierte Ester der Hippursäure und ihre Umsetzungen mit Benzylamin
✍ Scribed by R. Schwyzer; B. Iselin; M. Feurer
- Publisher
- John Wiley and Sons
- Year
- 1955
- Tongue
- German
- Weight
- 703 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Introduction of electron‐attracting substituents into the alcoholic component of methyl‐hippurate leads to activated esters which are characteristic acylating agents. A number of activated esters of hippuric acid are compared. The best acylating agent seems to be the cyanomethylester which is an easily accessible, cristalline, and stable compound, reacting easily with benzylamine at room temperature.
📜 SIMILAR VOLUMES
## Abstract Whereas the usefulness of the tetrahydro‐pyranyl residue for the activation of esters is rather limited, it is of definite value for the temporary etherification of the hydroxyl groups of tyrosine and serine derivatives. The stability of tetrahydro‐pyranyl ethers towards alkali and the
Durch vergleichende kinetische Untersuchungen der Aminolyseaktivittiit verschiedener Acylaminosaure-chinolyl-ester wird der Beweis fur einen Reaktionsmechanismus erbracht, durch den die ungewohnlich hohe Geschwindigkeit und zugleich der racemisierungsfreie Verlauf der Chinolyl-(8)-ester-Aminolyse er