| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 64990 | Journal of Molecular Catalysis A: Chemical | 2015 | 6 Pages |
•Polycarbosilane was used as the heterogeneous support in catalysis.•Palladium(II) ion was attached to the polycarbosilane to form Pd-PCS.•Heck reaction was considered for the catalytic activity study of Pd-PCS.•The catalytic activity of Pd-PCS was compared with Pd(II) on usual solid supports.•Pd-PCS catalysed the Heck reaction excellently.
Heck reaction catalyzed by palladium(II) attached polycarbosilane is reported. Polycarbosilane (PCS), which is an organic-inorganic hybrid polymer containing both Si and C in its back bone structure, was synthesized by the polycondensation of trichloromethylsilane and trimethoxyvinylsilane in the presence of sodium metal. Palladium acetate was attached to the polycarbosilane (Pd-PCS) and its catalytic activity was investigated. Heck reaction in which C–C coupling between aryl halides or vinyl halides and activated alkenes in the presence of a base has been selected for the study. Palladium ions supported on PCS have been used as a catalyst for the first time and it efficiently catalyzed Heck reaction and an yield of 75–90% was obtained with different substrates. For comparison, catalytic activities of Pd ions supported on SBA-15, activated charcoal and amorphous silica were also investigated. Results indicate the superior activity of Pd-PCS.
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