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探讨了在微波作用下,聚氯乙烯-三乙撑四胺负载钯配合物(PVC-TETA-Pd)对四苯硼钠与卤代苯的Suzuki反应的催化性能.实验发现:在微波功率为200W时,在Na2CO3,NaF,KF,NaHCO3等多种碱的存在下,以DMF的水溶液(V∶V=5∶3)为溶剂,在无惰性气体保护下,PVC-TETA-Pd催化四苯硼钠与碘代苯在20min内即可定量反应,与常规加热方式相比,节省了大量时间;同时也证明了四苯硼钠的四个苯基均可参与Suzuki偶联反应;该催化剂回收再利用3次后,仍具有较高的催化活性.
The catalytic activity of PVC-TETA-Pd on the Suzuki reaction of sodium tetraphenylborate with halogenated benzene was investigated under microwave irradiation. The experimental results show that when the microwave power is At 200W, PVC-TETA-Pd catalyzed tetraphenylbenzene was prepared under the protection of inert gas in the presence of various bases such as Na2CO3, NaF, KF, NaHCO3 and the like in an aqueous solution of DMF (V: V = 5: 3) Boron sodium and iodobenzene quantitative reaction within 20min, compared with the conventional heating method, saving a lot of time; also proved that the four phenyl tetraphenylboron can participate in the Suzuki coupling reaction; The catalyst recovery Reuse after 3 times, still has a high catalytic activity.