Concerted Catalysis by Adjacent Palladium and Gold in Alloy Nanoparticles for the Versatile and Practical [2+2+2] Cycloaddition of Alkynes
Concerted Catalysis by Adjacent Palladium and Gold in Alloy Nanoparticles for the Versatile and Practical [2+2+2] Cycloaddition of Alkynes
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DOI：
10.1002/anie.201800973
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发表时间：
2018-05-22
影响因子：
16.6
通讯作者：
Shishido, Tetsuya
中科院分区：
文献类型：
--
作者：
Miura, Hiroki;Tanaka, Yumi;Shishido, Tetsuya
Pd-Au合金催化取代炔的[2+2+2]环加成反应。而单一的Pd和Au催化剂是完全无效的，具有低Pd/Au摩尔比的Pd-Au合金纳米颗粒催化剂显示出高活性，以高产率得到相应的多取代芳烃。Pd-Au合金催化下，多种取代炔类化合物以不同的方式参与环加成反应。Pd-Au合金催化剂具有良好的耐空气性和重复使用性。
A Pd-Au alloy efficiently catalyzed the [2+2+2] cycloaddition of substituted alkynes. Whereas monometallic Pd and Au catalysts were totally ineffective, Pd-Au alloy nanoparticle catalysts with a low Pd/Au molar ratio showed high activity to give the corresponding polysubstituted arenes in high yields. A variety of substituted alkynes participated in various modes of cycloaddition under Pd-Au alloy catalysis. The Pd-Au alloy catalysts exhibited high air tolerance and reusability.