Total Synergistic Effect between Triflic Acid and Bismuth(III) or Antimony(III) Chlorides in Catalysis of the Methanesulfonylation of Arenes
2004
A total synergistic effect between bismuth(III) or antimony(III) chlorides and triflic acid has been observed in the Friedel−Crafts methanesulfonylation of arenes and has resulted in the development of the first efficient catalytic systems usable for the methanesulfonylation of both activated and deactivated arenes. A proposed mechanism to explain the observed effects is also discussed. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
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