PALLADIUM NANOPARTICLES IMMOBILIZED ON POLY(VINYL CHLORIDE)-SUPPORTED BIDENTATE LIGANDS: AN EASILY PREPARED, AIR AND MOISTURE STATE CATALYST FOR SUZUKI-MIYAURA REACTION
首发时间:2013-04-23
Abstract:The Pd nanoparticles with narrow size distribution embedded on the polymer surface of poly(vinyl chloride)-supported an inexpensive and simple bidentate ligand 2-mercaptobenzothiazole (PVC-MBT) were achieved by a simple procedure applying the corresponding functionalized polymer and PdCl2 in the ethanol solution. The as-prepared catalyst (PVC-MBT-Pd(0)) was found to be air and moisture stable and exhibits significant catalytic activity for Suzuki-Miyaura reactions under milder operating conditions. The catalysts showed excellent activity towards Suzuki-Miyaura coupling reaction of different aryl iodides and bromides with phenyl boronic acid using ethanol as solvent in short reaction times. Furthermore, the catalyst can be easily recovered by simple filtration and reused for at least 5 cycles with comparable yields.
keywords: nanopalladium poly(vinyl chloride) 2-mercaptobenzothiazole bidentate ligand Suzuki-Miyaura reaction
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聚氯乙烯支载二齿配体负载纳米钯粒子:一种易于制备且在空气中稳定的SUZUKI-MIYAURA反应催化剂
摘要:在乙醇溶液中,用氯化钯和价廉易得的2-巯基苯并噻唑二齿配体功能化的聚氯乙烯可以方便地制备得到负载纳米钯催化剂。所制备得道的纳米钯催化剂(PVC-MBT-Pd(0))在空气和湿气中稳定,在Suzuki-Miyaura反应中表现出明显的催化活性,在乙醇中可以在较短时间内催化一系列芳基溴或芳基点与芳基硼酸反应。而且,催化剂通过过滤即可回收使用,催化剂重复使用5次,催化活性不变。
关键词: 纳米钯 聚氯乙烯 巯基苯并噻唑 二齿配体 Suzuki-Miyaura反应
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聚氯乙烯支载二齿配体负载纳米钯粒子:一种易于制备且在空气中稳定的SUZUKI-MIYAURA反应催化剂
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