Beilstein J. Org. Chem.2006,2, No. 1, doi:10.1186/1860-5397-2-1
, [12] the benzoylbenzofurans 5a-5d, were prepared in one-potreaction from α-bromoacetophenone 6 and ortho-hydroxybenzaldehydes 7a-7d in excellent yields (90–96%). Reduction of benzoylbenzofurans 5a-5d in the presence of NaBH4 yielded the secondary alcohols 8a-8d, which upon treatment with N,N
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Graphical Abstract
Figure 1:
Examples of carbanionic aromatic chemistry rearrangements.