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Synthesis and characterization of new α,β-unsaturated γ-lactones: Alkyl 3-acetyl-4-hydroxy-2-methyl-5-oxo-2,5-dihydrofuran-2-ylcarbamates

✍ Scribed by Ş. H. Üngören; M. Saçmaci; Y. Akçamur; C. Arici; D. Ülkü

Publisher: Journal of Heterocyclic Chemistry
Year: 2005
Tongue: English
Weight: 80 KB
Volume: 42
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570420431

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✦ Synopsis

A convenient procedure for the preparation of carbamate derivatives of 5-oxo-2,5-dihydrofuran (3) was described. The method is based on the Michael type addition of three alkyl carbamates (2) with 4-acetyl-5methyl-2,3-dihydro-2,3-furandione (1). According to 1 H nmr spectra of compounds show tautomeric forms (3,4,5) in CDCl 3 . In the solid state the synthesized compounds are enol forms (3). The products were characterized with molecular spectroscopic methods.

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