期刊
APPLIED CATALYSIS A-GENERAL
卷 480, 期 -, 页码 1-9出版社
ELSEVIER
DOI: 10.1016/j.apcata.2014.04.029
关键词
Palladium nanoparticles; Heterogeneous catalysis; Sonogashira cross-coupling carbonylation; Metal vapour synthesis
资金
- Italian Project PRIN Preparazione con metodologie innovative di nuovi catalizzatori nanostrutturati polimero-metallo a base di metalli nobili e loro impiego in reazioni di interesse applicativo
Palladium nanoparticles supported on two Smopex (R) commercial metal scavengers (1% w/w) have been tested in the carbonylative Sonogashira reactions of aryl iodides with phenylacetylene. Their catalytic activity has been compared with those of more common catalysts (Pd/C, Pd/gamma-Al2O3). Pd/Smopex (R)-234 resulted especially effective in the synthesis of alkynyl ketones even working with a low amount of palladium (0.2-0.5 mol%). Preliminary heterogeneity tests (i.e. hot filtration test, Pd leaching and recycle of the catalyst) have been performed in order to evaluate the catalytic behaviour of this system. The obtained results seem to indicate that Pd/Smopex (R)-234 could act as a truly heterogeneous catalyst. (C) 2014 Elsevier B.V. All rights reserved.
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