A novel copper-catalyzedarylation of arylboronic acids with aldehydes under oxygen atmosphere was achieved in the presence of Cu(OTf) 2 and Xantphos, affording diaryl ketone derivatives in moderate to good yields. The efficiency of this reaction was demonstrated by the compatibility with fluoro, bromo, chloro, nitro, methylsulfonyl, and trifluoromethyl groups.
“Greener” Friedel−Crafts Acylations: A Metal- and Halogen-Free Methodology
作者:Mark C. Wilkinson
DOI:10.1021/ol200482s
日期:2011.5.6
The utility of methanesulfonic anhydride for promoting the Friedel−Crafts acylation reaction of aryl and alkyl carboxylic acids is disclosed. This reagent allows the preparation of aryl ketones in good yield with minimal waste containing no metallic or halogenated components, clearly differentiating it from other available methodologies.