A palladium‐catalyzed cross‐coupling reaction of diarylvinylidenecyclopropanes with 2‐iodophenol and N ‐(2‐iodophenyl)‐4‐methylbenzenesulfonamide provided a variety of cyclopropane‐containing 2,2‐diaryl‐3‐tetramethylcyclopropylidene‐2,3‐dihydrobenzofuran and 2,2‐diaryl‐3‐tetramethylcyclopropylidene‐1‐(toluene‐4‐sulfonyl)‐2,3‐dihydro‐1 H ‐indole derivatives in moderate‐to‐good yields.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
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Li et al. (2008) studied this question.
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