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Acceptor Properties of Trifluoroacetic Anhydride

✍ Scribed by I. A. Ivanov; R. G. Makitra; Ya. N. Pirig; V. G. Tsvetkov; V. A. Shmakov

Book ID
110325424
Publisher
Springer
Year
2001
Tongue
English
Weight
31 KB
Volume
71
Category
Article
ISSN
1070-3632

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Reaction of tryptophan with trifluoroace
Reaction of tryptophan with trifluoroacetic anhydride
✍ Jan Bergman; GΓΆran Lidgren πŸ“‚ Article πŸ“… 1989 πŸ› Elsevier Science 🌐 French βš– 226 KB

Trifluoroacetic anhydride {TFAA) in ether quickly (= 5-10 min) converted tryptophau to the crystalline 2-trifluoromethyl-5(4@-oxazolone (2) without racemization. Dissolution of optically active 2 in acetonitrile gave racemic 2, whereas treatment with hot aqueous dioxane gave the isomeric oxazolone (