Abstract
[reaction: see text] The palladium-catalyzed coupling of aryl iodides and arenesulfinates provides a simple and extremely efficient new route to unsymmetrical diaryl sulfones, usually isolated in high yield. The reaction tolerates a variety of functionalized aryl iodides, including those containing ether, ester, and nitro groups. The best results have been obtained by using Pd(2)(dba)(3), Xantphos, Cs(2)CO(3), and (n)Bu(4)NCl in toluene at 80 degrees C.
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