Synthesis of 1,3-Dienes via a sequential Suzuki-Miyaura coupling/Palladium-mediated Allene isomerization sequence. by yassir Al-Jawaheri, Marc Kimber

“…This process is general for a range of boronic acids, including boronic acids with electron donating and withdrawing groups, as well as heteroarylboronic acids. Key to this process is the boric acid by-product of the base-free Suzuki–Miyauru coupling, which generates the required palladium–hydrido complex [H-PdII-OB(OH)2] required for the isomerization.…”
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Enabling the rearrangement of unactivated allenes to 1,3-dienes by use of a palladium (0)/boric acid system by yassir Al-Jawaheri, Matthew C. Turner, Marc Kimber

“…The palladium hydride complex is generated from a simple Pd0 source and boric acid (B(OH)3), which is typically identified as a waste by-product of the Suzuki-Miyaura reaction. …”
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