Homocoupling of Terminal Alkynes Catalysed by Ultrafine Copper Nanoparticles on Titania
Homocoupling of Terminal Alkynes Catalysed by Ultrafine Copper Nanoparticles on Titania
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DOI：
10.1002/ejoc.201001735
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发表时间：
2011-05-01
影响因子：
2.8
通讯作者：
Yus, Miguel
中科院分区：
文献类型：
--
作者：
Alonso, Francisco;Melkonian, Taki;Yus, Miguel
在四氢呋喃（THF）或无溶剂条件下，以哌替啶为碱存在时，二氧化钛上的铜纳米颗粒可有效催化末端炔的氧化均偶联。使用低催化剂负载（1 mol-% Cu），以高收率合成了各种各样的双炔。铜催化剂（主要是Cu2O）已经通过不同的手段进行了表征，易于制备，可以多次重复使用，在空气或惰性气氛下都可以工作，并且被证明优于其他市售铜源。
Copper nanoparticles on titania effectively catalyse the oxidative homocoupling of terminal alkynes in the presence of piperidine as a base in tetrahydrofuran (THF) or under solvent-free conditions. A wide range of diynes have been synthesised in high yields using low catalyst loading (1 mol-% Cu). The copper catalyst (mainly as Cu2O) has been characterised by different means, is easy to prepare, can be reutilised several times, works either in air or under inert atmosphere and was shown to be superior to other commercially available copper sources.