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Benzopyrones. Part 19. Synthesis and some reactions of ethyl 3-bromo-4-oxochromen-2-carboxylate

✍ Scribed by Bevan, Peter S.; Ellis, Gwynn P.

Book ID
111686917
Publisher
Royal Society of Chemistry
Year
1983
Weight
673 KB
Volume
0
Category
Article
ISSN
1472-7781

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Benzopyronesβ€”V Mass spectra of some ethy
Benzopyronesβ€”V Mass spectra of some ethyl 4-oxochromen-2-carboxylates and related compounds
✍ G. Barker; G. P. Ellis πŸ“‚ Article πŸ“… 1971 πŸ› John Wiley and Sons 🌐 English βš– 401 KB

## Abstract The mass spectra of 23 chromone derivatives are recorded and interpreted. Most of these are ethyl 4‐oxochromen‐2‐carboxylate derivatives, which with two exceptions, show the molecular ion as the base peak. In the spectrum of the unsubstituted ester (XVIII), the other most important frag