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Structure Determination of Isomeric Pyronopyrones Synthetized from 2,4-Dioxo-4-(4-hydroxy-6-methyl-2-pyrone-3-yl) Butyric Acid Ethyl Ester

M. Laćan ; Laboratory of Organic Chemistry and Technology, Biochemistry Department, Faculty of Technology and Laboratory of Analytical Chemistry, Faculty of Science, University of Zagreb, Zagreb, Croatia, Yugoslavia
A. Brbot ; Laboratory of Organic Chemistry and Technology, Biochemistry Department, Faculty of Technology and Laboratory of Analytical Chemistry, Faculty of Science, University of Zagreb, Zagreb, Croatia, Yugoslavia
Z. Štefanac ; Laboratory of Organic Chemistry and Technology, Biochemistry Department, Faculty of Technology and Laboratory of Analytical Chemistry, Faculty of Science, University of Zagreb, Zagreb, Croatia, Yugoslavia

Sažetak

Two isomeric pyronopyrones were obtained by cyclization of
2,4-dioxo-4-(4-hydroxy-6-methyl-2-pyrone-3-yl) butyric add ethyl
ester in glacial acetic acid or acetic anhydride.
The structures of the compounds are discussed on the basis of
their infrared, ultraviolet, 1H NMR, 13C NMR and mass 'Spectra as
well as chemical properties observed.

Ključne riječi

Hrčak ID:

196487

URI

https://hrcak.srce.hr/196487

Datum izdavanja:

20.2.1976.

Posjeta: 470 *