OXIDATIVE REARRANGEMENT OF 3-ARYL-1<i>H</i>-BENZO[<i>f</i>]CHROMENES INTO 2-AROYL-1,2-DIHYDRONAPHTHO[2,1-<i>b</i>]FURANS
DOI:
https://doi.org/10.1007/6259Keywords:
This work was supported by the Russian Science Foundation (grant 19-73-10109)Abstract
By the reaction of 3-aryl-1H-benzo[f]chromenes with N-bromosuccinimide in aqueous acetone, a series of 2-aroyl-1,2-dihydronaphtho[2,1-b]furans unsubstituted at the C-1 position were obtained as a result of formal addition of hypobromous acid to the pyran fragment and intramolecular nucleophilic substitution. This reaction is a rare example of the ring constriction in 1H-benzo[f]chromene series.
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Published
2021-05-27
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