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A novel preparation of pseudoxazolones

Authors
Journal
Tetrahedron
0040-4020
Publisher
Elsevier
Publication Date
Volume
23
Issue
8
Identifiers
DOI: 10.1016/s0040-4020(01)92303-8

Abstract

Abstract 2-Alkenyl-2-oxazolin-5-ones were prepared from N-Acryloyl-and N-methacryloyl-α-amino acids in excess acetic anhydride, while in the reaction with an equimolar amount of acetic anhydride in pyridine, new pseudoxazolones, 2-alkylidene-3-oxazolin-5-ones, were synthesized from the same N-acyl-α-amino acids in high yields. The 5-oxazolones were distinguished by IR, NMR, and UV spectroscopy. A structural relationship between the 5-oxazolones produced and the N-acyl-α-amino acids used as starting materials has been discussed.

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