Synthesis of Biaryl Phosphine Palladium(0) Precatalysts

Organometallics(2021)

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摘要
Well-defined palladium precatalysts have become increasingly important in cross-coupling chemistry. Despite the wide choice of complexes available today, palladium(0) compounds bearing Buchwald’s biaryl phosphines are still under-represented. We present here an efficient and facile synthesis of biaryl phosphine palladium(0) complexes supported by a divinyltetramethyldisiloxane (dvtms) ligand. Starting from commercially available [Pd­(allyl)­Cl]2, a variety of [Pd­(L)­(dvtms)] complexes can be accessed in high yields under mild reaction conditions. Their catalytic activity was tested in Buchwald–Hartwig couplings and found to be very good for both (hetero)­aryl bromides and chlorides.
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关键词
precatalysts,palladium0,synthesis,phosphine
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