期刊
NEW JOURNAL OF CHEMISTRY
卷 34, 期 12, 页码 2729-2731出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0nj00482k
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资金
- National Science Foundation [CHE-0911207]
- Welch Foundation, Texas AM University [A-1706]
- DFG [SFB 623]
- Division Of Chemistry [0911207] Funding Source: National Science Foundation
The rigid linkers E(p-C6H4PPh2)(4) (E = Si, Sn) have been synthesized from the corresponding precursors E(p-C6H4Br)(4) and immobilized by forming one (E = Si) or three (E = Sn) phosphonium groups that are attached to the silica support by electrostatic interactions. The remaining unquaternized phosphines are coordinated to Wilkinson-type Rh complexes. The catalyst immobilized by the rigid scaffold with three surface-bound phosphonium groups (E = Sn) displays superior catalytic activity and lifetime with respect to the hydrogenation of dodecene. This catalyst can be recycled 30 times in a batchwise manner under standardized conditions.
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