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Hydrosilylation of aromatic nitriles promoted by solvated rhodium atom-derived catalysts |
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| Authors: | Anna Maria Caporusso Nicoletta Panziera Paolo Pertici Emanuela Pitzalis Piero Salvadori Giovanni Vitulli and Gianmario Martra |
| Institution: | a Centro di Studio del CNR per le Macromolecole Stereordinate ed Otticamente Attive, Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Pisa, Via Risorgimento 35, 56126 Pisa, Italy b Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università degli Studi di Torino, Via P. Giuria, 7, 10125 Turin, Italy |
| Abstract: | Rhodium metal particles, isolated as supported or unsupported powder starting from mesitylene solvated rhodium atoms, catalyse the hydrosilylation of aromatic nitriles to N,N-disilylamines in high conversion at 100°C. Different hydrosilanes (HSiMe3, HSi(OEt)3) can be employed. In the case of cinnamonitrile, the chemoselectivity of the reaction to 2-trimethylsilyl-3-phenylpropionitrile and (E)- and (Z)-1-di(trimethylsilyl)amino-3-phenyl-1-propene is strongly dependent on the reaction temperature. The commercial rhodium on γ-Al2O3 catalyst is considerably less active and selective than the analogous catalyst prepared via Metal Vapour Synthesis (MVS) probably owing to the different dimension and distribution of the metal particles in the two samples as shown by HRTEM analysis. |
| Keywords: | Rhodium nanoparticles Hydrosilylation Aromatic nitriles Catalysis N N-Disilylamines |
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