Abstract
The unusual alcohol mediated formation of 4-oxo-2-aryl-4H-chromene-3- carboxylate (flavone-3-carboxylate) derivatives from 4-hydroxycoumarins and β-nitroalkenes in an alcoholic medium is described. The transformation occurs via the in situ formation of a Michael adduct, followed by the alkoxide ion mediated rearrangement of the intermediate. The effect of the different alcohol and nonalcohol media on the reaction was investigated.
Original language | English |
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Pages (from-to) | 6495-6504 |
Number of pages | 10 |
Journal | Journal of Organic Chemistry |
Volume | 77 |
Issue number | 15 |
DOIs | |
Publication status | Published - 2012 Aug 3 |
ASJC Scopus subject areas
- Organic Chemistry