Interface Engineering in Two-Dimensional Heterostructures: Towards an Advanced Catalyst for Ullmann Couplings
Interface Engineering in Two-Dimensional Heterostructures: Towards an Advanced Catalyst for Ullmann Couplings
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二维异质结构中的界面工程：迈向乌尔曼耦合的先进催化剂
DOI：
10.1002/anie.201508571
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Wu CZ
中科院分区：
文献类型：
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作者：
Sun Xu;Deng Haitao;Zhu Wenguang;Yu Zhi;Wu Changzheng;Xie Yi;Sun Xu;Deng Haitao;Yu Zhi;Wu Changzheng;Xie Yi;Zhu Wenguang;Zhu Wenguang;Wu CZ;Wu CZ
先进有机反应催化剂的设计具有深远的意义。在这些过程中，亲电性和亲核性在化学键的激活中发挥着至关重要的作用，并最终加速有机反应。在这里，我们展示了一种调节有机转化催化剂的亲电性和亲核性的新方法。二维异质纳米结构中的界面工程触发了电子在界面上的转移。因此，催化剂具有更强的电正性，从而在乌尔曼反应中表现出优异的性能。在工程化的二维 Cu2S/MoS2 杂纳米结构的存在下，碘苯和对氯苯酚的偶联在温和条件（100°C）下以 92% 的产率得到了所需的产物。此外，该催化剂表现出优异的稳定性和高可回收性，五次循环后收率达到89%。我们建议界面工程可以广泛应用于开发新型有机反应催化剂。
The design of advanced catalysts for organic reactions is of profound significance. During such processes, electrophilicity and nucleophilicity play vital roles in the activation of chemical bonds and ultimately speed up organic reactions. Herein, we demonstrate a new way to regulate the electro‐ and nucleophilicity of catalysts for organic transformations. Interface engineering in two‐dimensional heteronanostructures triggered electron transfer across the interface. The catalyst was thus rendered more electropositive, which led to superior performance in Ullmann reactions. In the presence of the engineered 2D Cu2S/MoS2heteronanostructure, the coupling of iodobenzene and para‐chlorophenol gave the desired product in 92 % yield under mild conditions (100 °C). Furthermore, the catalyst exhibited excellent stability as well as high recyclability with a yield of 89 % after five cycles. We propose that interface engineering could be widely employed for the development of new catalysts for organic reactions.