Oxidative rearrangement of 4H-chromenes to 2-aroylbenzofurans in the presence of selenium dioxide

[Figure not available: see fulltext.] A new method is proposed for the preparation of 2-aroylbenzofurans and 2-aroylnaphtho[2,1-b]furans via oxidative rearrangement of 2,4-diaryl-4Н-chromenes and 1,3-diaryl-1Н-benzo[f]chromenes in the presence of selenium dioxide. © 2017, Springer Science+Business Media, LLC, part of Springer Nature.