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Différents mélanges bentonite/kieselguhr obtenus par simple mélange mécanique et avec différents rapports ont été préparés et caractérisés afin d’étudier leurs propriétés physiques et chimiques. L’évaluation de leurs propriétés catalytiques est conduite dans un premier temps sur des molécules modèles, puis sur une fraction pétrolière réelle. Un mélange bentonite/kieselguhr 30/70 montre que la compétition...
The solvent is certainly one of the main sources of wastes during palladium-catalysed direct arylation reactions. We found that such direct arylations of heteroaromatics can be performed using very high concentrations of reactants (0.5M–5M). However, the Pd catalyst precursor used must be adapted to both the solvent nature and the concentration of reactants. The reactions performed in DMA, NMP or...
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