Journal
SYNLETT
Volume -, Issue 6, Pages 1104-1106Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-2004-817766
Keywords
dealkylation; Friedel-Crafts acylation; niobium
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A simple and convenient method for the differentiation of alkoxy groups on aromatic rings is described. Niobium(V) is found to possess a strong Lewis acid property to transform alkyl arylethers smoothly to the corresponding phenols in high yields. The excellent regioselectivity was also observed in dialkoxy benzene derivatives under mild conditions.
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