Pd nanoparticles immobilized in [bmim][PF6] supported on laponite clay as highly recyclable catalysts for the Mizoroki–Heck reaction

• Straightforward preparation of supported palladium nanoparticles.
• Thin films of ionic liquid on laponite synthetic clay as support.
• Easy manipulation of supported Pd nanoparticles thanks to support effects.
• Mizoroki–Heck cross-coupling reactions in solventless conditions.
• Easy reaction work-up and high recoverability of catalysts (up to 17 times).

Mizoroki–Heck cross-couplings of aryl halides catalyzed by highly active palladium nanoparticles, immobilized on [bmim][PF6] films supported on laponite clay, have been investigated. The reactions are performed at 100 °C in solventless conditions to afford the corresponding coupling products in good to excellent yields under non-anhydrous and non-degassed conditions. Highly recoverable catalytic systems have been prepared, allowing up to 17 catalytic cycles with good yields and excellent selectivities. A positive support effect seems to contribute to the long duration of these catalysts.

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