| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 50958 | Catalysis Communications | 2010 | 5 Pages |
A couple of robust and reusable diamine-bridged dimeric Mn(salen) complexes were prepared by the encapsulation of homogeneous dimeric Mn(salen) complexes into nanocages of three-dimensionally (3D) periodic mesoporous organosilica (PMO) support followed by the silylation of the support with organosilane. The materials exhibited 3D periodic mesostructure with body-centered Im3m symmetry, and the confined Mn(salen) complexes maintained their original structure. As-prepared heterogeneous dimeric Mn(salen) complexes were successfully applied in the epoxidation of three alkenes (i.e. styrene, cyclohexene, and 1-phenylcyclohexene) by using NaClO as the oxygen donor and CH2Cl2 as a solvent, and the reusability of the materials was evaluated through three times' catalytic runs.
Graphical AbstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights►A couple of diamine-bridged dimeric Mn(salen) complexes were prepared. ►The materials were successfully applied in the epoxidation of three alkenes. ►Heterogeneous dimeric Mn(salen) complexes showed higher catalytic activity. ►Heterogeneous dimeric Mn(salen) complexes could be reused by simplified separation.
