Highly efficient and recyclable catalyst for the direct chlorination, bromination and iodination of terminal alkynes
Highly efficient and recyclable catalyst for the direct chlorination, bromination and iodination of terminal alkynes
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用于末端炔烃直接氯化、溴化和碘化的高效且可回收的催化剂
DOI：
10.1016/j.jcat.2017.07.019
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发表时间：
2017-09-01
影响因子：
7.3
通讯作者：
Chen, Hao
中科院分区：
文献类型：
--
作者：
Shi, Wei;Guan, Zhipeng;Chen, Hao
直接卤化，包括末端炔烃的氯化、溴化和碘化，在有机合成中非常重要。这里开发了一种高效且可回收的纳米Ag/g-C3N4催化剂体系，并通过从氯化、溴化到碘化的39个实例证明其具有显着的活性，其中14次运行的产物收率超过95%。几次运行后，催化剂的回收也没有明显的活性损失：在苯乙炔的溴化反应中，即使在运行 5 次后，仍观察到 99% 的收率。该催化剂体系成本低、易于制备，使得该方法具有通用性、方便性和经济性。 (C) 2017 Elsevier Inc. 保留所有权利。
Direct halogenation, including chlorination, bromination and iodination of terminal alkynes, are of great importance in organic synthesis. Here an efficient and recyclable nano-Ag/g-C3N4 catalyst system was developed and proved to be remarkably active with 39 examples varied from chlorination, bromination to iodination, of which 14 runs have yielded more than 95% of the product. Recycling of the catalyst was also achieved without obvious activity loss after several runs: 99% yield was observed even after 5 runs in the bromination of phenylacetylene. The catalysts system is of low cost and easy to be prepared, making this procedure versatile, convenient and economic. (C) 2017 Elsevier Inc. All rights reserved.