室温/水相体系下纤维钯配合物催化Suzuki反应研究

Research on catalyzed Suzuki reaction at room temperature/water phase system with fiber palladium

以偕胺肟化的聚丙烯腈纤维为载体,制备了偕胺肟纤维-钯(Ⅱ)配合物[AOFs-Pd(Ⅱ)].考察了AOFsPd(Ⅱ)催化苯硼酸频哪醇酯与卤代芳烃Suzuki反应的催化性能.结果表明:在室温下,乙醇/水(V/V=2∶1,30mL)为溶剂,碳酸钾(10mmol)为碱,AOFs-Pd(Ⅱ)(0.1g)、苯硼酸频哪醇酯(6mmol)与碘苯(5mmol)反应时,产率能达到90%以上.而且本反应对于溴代苯及其衍生物和溴代杂环芳烃也具有良好的适应性.反应后催化剂易从反应体系中分离,并可以重复使用6次.

The modified polyacrylonitrile fiber was used as carrier to prepare [-AOFs-Pd（ Ⅱ ）1. The cata- lytic performance of the Suzuki reaction on AOFs-Pd（ Ⅱ ） and halogenated aromatic hydrocarbons was investigated. Results showed that at room temperature,the yield of [AOFs-Pd（ Ⅱ ）3 could reach 90% under following conditions, ethanol / water （V/V = 2 ： 1,30 mL） as solvent, potassium carbonate （10 mmol） as base,AOFs-Pd（ Ⅱ ）（0.1 g） ,boronic acid pinacol ester（6 mmol） and iodobenzene（5 retool）. The reaction also had a good adaptability on bromobenzene/its derivatives and brominated aromatic het- eroeyelic. The catalyst could be easily separated from the reaction system after the reaction and used re- peatedly for six times.