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Direct Mechanocatalysis: Palladium as Milling Media and Catalyst in the Mechanochemical Suzuki Polymerization

Christian G Vogt, Sven Grätz, Stipe Lukin, Ivan Halasz, Martin Etter, Jack D Evans, Lars Borchardt

Angew Chem Int Ed Engl. 2019 Dec 19;58(52):18942-18947.

PMID: 31593331

Abstract:

The milling ball is the catalyst. We introduce a palladium-catalyzed reaction inside a ball mill, which makes catalyst powders, ligands, and solvents obsolete. We present a facile and highly sustainable synthesis concept for palladium-catalyzed C-C coupling reactions, exemplarily showcased for the Suzuki polymerization of 4-bromo or 4-iodophenylboronic acid giving poly(para-phenylene). Surprisingly, we observe one of the highest degrees of polymerization (199) reported so far.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP5122996 4-Iodophenylboronic acid 4-Iodophenylboronic acid 5122-99-6 Price
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