| 有机-无机杂化载体-聚(苯乙烯-苯乙烯基膦酸)-磷酸氢锆-在烯烃环氧化反应中的应用(英文) |
| Organic-Inorganic Hybrid Support-Zirconium Poly (Styrene-Phenylvinylphosphonate)-Phosphate: Application for Heterogeneous Olefin Epoxidation |
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| 摘要: 有机聚合物-无机杂化载体-聚(苯乙烯-苯乙烯基膦酸)-磷酸氢锆-轴向固载手性Salen Mn(Ⅲ)催化剂，将其应用于非官能烯烃的多相不对称环氧化反应。结果表明：在没有昂贵轴向添加剂参与下，产率与对映选择性均急剧增加。以间氯过氧苯甲酸(m-CPBA)为氧化剂催化氧化α-methylstyrene，转化率从25.0%上升到98.8%；对映选择性从5.3%提高到67.3%。催化剂在循环使用5次以后，催化活性无明显改变。 |
| 关键词: 苯氧基修饰聚(苯乙烯基-苯乙烯膦酸)-磷酸氢锆 手性Jacobsen催化剂 非功能化烯烃 不对称非均相环氧化 |
| 基金项目: |
| Abstract: The chiral Mn(Ⅲ) salen catalyst axially immobilized onto an organic-inorganic hybrid support-phenoxy modified zirconium poly (styrene-phenylvinylphosphonate)-phosphate (ZPS-PVPA) can afford dramatically increased conversion and ee (Enantiomeric excess) value in the absence of expensive O-coordinating axial bases for the asymmetric epoxidation. Especially for the epoxidation of α-methylstyrene in the m-chloroperbenzoic acid (m-CPBA) oxidant system (conv.%: from 25.0% to 98.8%; ee%: from 5.3% to 67.3%). Moreover, the as-synthesized catalyst is relatively stable and can be recycled at least five times without significant loss of activity and enantioselectivity. |
| Keywords: phenoxyl modified zirconium poly (styrene-phenylvinylphosphonate)-phosphate chiral jacobsens homogenous catalyst unfunctionalized olefins asymmetric heterogeneous epoxidation |
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| 邹晓川,李 俊,石开云,李贵节,傅相锴.有机-无机杂化载体-聚(苯乙烯-苯乙烯基膦酸)-磷酸氢锆-在烯烃环氧化反应中的应用(英文)[J].无机化学学报,2012,28(5):1031-1037. |
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