Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1340826 | Polyhedron | 2007 | 7 Pages |
Pd(0) complexes of Ph2P–N–PPh2 and (P,N) ligands anchored on silica gel via a –O–Si–CH2CH2CH2– linker are shown to catalyze C–C coupling reactions between aryl bromides/aryl iodides, p-Y–C6H4X (where Y = NO2, Cl; X = Br, I) and acrylic acid/styrene CH2CHR (R = Ph, COOH) in good yield, up to 92%. Only the trans product is formed selectively. The catalysts can be re-used up to 15–16 times, without significant loss of yield. Their further re-use up to 30 times is also possible, but with the yield reduced by 10–15%.
Graphical abstractPd(0) complexes of Ph2P–N–PPh2 and (P,N) ligands anchored on silica gel (1–3) are shown to catalyze C–C coupling reactions between aryl bromides/aryl iodides, p-Y–C6H4X (where Y = NO2, Cl; X = Br, I) and acrylic acid/styrene CH2CHR (R = Ph, COOH). Only the trans product is formed selectively. The catalysts can be reused up to 15–16 times, without significant loss of yield.Figure optionsDownload full-size imageDownload as PowerPoint slide