Concerted Catalysis by Adjacent Palladium and Gold in Alloy Nanoparticles for the Versatile and Practical [2+2+2] Cycloaddition of Alkynes
作者:Hiroki Miura、Yumi Tanaka、Karin Nakahara、Yuka Hachiya、Keisuke Endo、Tetsuya Shishido
DOI:10.1002/anie.201800973
日期:2018.5.22
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
Pd-Au合金有效地催化了取代炔烃的[2 + 2 + 2]环加成反应。尽管单金属Pd和Au催化剂完全无效,但Pd / Au摩尔比低的Pd-Au合金纳米颗粒催化剂显示出高活性,可以高收率得到相应的多取代芳烃。在Pd-Au合金催化下,各种取代的炔烃参与了各种环加成反应。Pd-Au合金催化剂具有很高的耐空气性和可重复使用性。