One-Pot Cross-Coupling of Diborylmethane for the Synthesis of Dithienyl­methane Derivatives

The one-pot palladium-catalyzed Suzuki–Miyaura cross-coupling reaction of a diborylmethane with bromothiophene derivatives realized the synthesis of various dithienylmethane derivatives. Cyclopentadithiophenes, which are promising compounds in material science, can be obtained in good yields. The in situ generation of an unstable thienylmethylboronate is a key step for the present reaction.