Synthesis of Dibenzothiophenes by Pd‐Catalyzed Dual C ? H Activation from Diaryl Sulfides
2014
Palladium-catalyzed dual CH functionalization of diaryl sulfides to form dibenzothiophenes (DBTs) by oxidative dehydrogenative cyclization is reported. This protocol afforded various DBTs in moderate to good yields with tolerance of a wide variety of substrates. Benzo[1,2-b:4,5-b′]bis[b]benzothiophene was successfully synthesized by this method, which was used as an organic semiconductor for field-effect transistors.
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