期刊
CHEMSUSCHEM
卷 7, 期 8, 页码 2136-2139出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201402061
关键词
arenes; c-c coupling; gold; nanoparticles; supported catalysts
资金
- Project CONSOLIDER INGENIO (MULTICAT)
- SEVERO OCHOA Program for centres of excellence
- European Union Seventh Framework Programme [PIOF-GA-2009-253129]
We show that gold nanoparticles are able to perform the direct oxidative coupling of nonactivated aromatics with O-2 as the only co-reagent. In this reaction, the aromatic acts both as reactant and solvent. Biphenyl, for example, can be obtained from benzene with high selectivity and a turnover number (TON) of 230 per pass. Similarly, several substituted biaryls can be prepared. Pd performs only one TON and even when a second catalytic functionality is introduced, together with strong acidic conditions, TON is always lower than 100. Other catalysts require iodine for performing the reaction, leading to 2 kg of waste for 1 kg of biphenyl formed, whereas no waste is created by the oxidative coupling with gold nanoparticles.
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