科研之友
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摘要
To discover new heterogeneous palladium catalyst in organic synthesis, pectin, which was extracted form citrus peel, was used as supporter for the preparation of pectin. supported palladium catalyst. The pectin-supported palladium catalyst was applied to Suzuki cross. coupling reaction between sodium tetraphenylborate and aryl bromides. The results revealed that all four aryl groups of sodium tetraryylborate could be efficiently utilized in the Suzuki cross-coupling reactions in an atom. efficient way in the presence of Et3N as base in PEG 400/H2O at 110 degrees C in open air, providing excellent yields of the corresponding functionalized biaryls within 1 h. The present protocol has the advantages highly efficient, high yield, mild condition, short reaction time, as well as the catalyst can be recycled and reused.
- 出版日期2016-4-10
- 单位内江师范学院
