Recyclable Polystyrene-Supported Copper Catalysts for the Aerobic Oxidative Homocoupling of Terminal Alkynes
Shuo Yan, Shiguang Pan, Takao Osako, Yasuhiro Uozumi*
*Institute for Molecular Science (IMS), JST-ACCEL, and JST-CREST, Okazaki 444-8787, Japan, Email: uoims.ac.jp
S. Yan, S. Pan, T. Osako, Y. Uozumi, Synlett, 2016, 27, 1232-1236.
DOI: 10.1055/s-0035-1561361 (free Supporting Information)
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Polystyrene-supported copper(II) N,N,N′,N′-tetraethyldiethylenetriamine [Cu(II)-TEDETA] complexes efficiently catalyzed the oxidative homocoupling of terminal alkynes under air to give the corresponding 1,3-diynes in very good yield. The catalyst was easily recovered by simple filtration and reused eight times without significant loss of catalytic activity.
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