A novel N-stable Co2P nano-catalyst for the synthesis of quinoxalines by annulation of alkynes and 1,2-diaminobenzenes

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters Pub Date : 2024-12-04 DOI:10.1016/j.cclet.2024.110707

Xiaochun Liu , Gaoyan Chen , Xiaodong Yue , Chaoyue Wang , Xue-Xin Zhang , Xuecheng Ran , Yingxiao Zong , Junke Wang , Xicun Wang

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Abstract

Designing efficient, recyclable, and low-cost catalysts is crucial for the synthesis of quinoxaline derivatives. In this context, a novel N-stable Co₂P nano-catalyst (CoP@NC-1.5) was developed using a template-sacrificial approach. The catalyst demonstrated a broad substrate scope and good functional group tolerance, achieving yields of up to 84 %. Additionally, the catalyst exhibited reusability and can be recycled up to three times. The CoP@NC-1.5 was characterized using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results indicated that the catalyst contained Co₂P nanoparticles. The X-ray photoelectron spectroscopy (XPS) further confirms the presence of Co-P. Analysis of the characterization data and experimental results revealed that the active site of the catalyst comprises N-stable Co₂P nanoparticles.

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一种新型n稳定Co2P纳米催化剂，用于炔烃和1,2-二氨基苯环化合成喹啉

设计高效、可回收、低成本的催化剂是合成喹诺啉衍生物的关键。在这种情况下，使用模板牺牲方法开发了一种新型n稳定的Co2P纳米催化剂（CoP@NC-1.5）。该催化剂表现出广泛的底物范围和良好的官能团耐受性，收率高达84% %。此外，该催化剂具有可重复使用性，最多可回收三次。利用x射线粉末衍射（XRD）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对CoP@NC-1.5进行了表征。结果表明，催化剂中含有Co2P纳米颗粒。x射线光电子能谱（XPS）进一步证实Co-P的存在。对表征数据和实验结果的分析表明，催化剂的活性位点由n稳定的Co2P纳米颗粒组成。

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来源期刊

Chinese Chemical Letters 化学-化学综合

CiteScore

14.10

自引率

15.40%

发文量

8969

审稿时长

1.6 months

期刊介绍： Chinese Chemical Letters (CCL) (ISSN 1001-8417) was founded in July 1990. The journal publishes preliminary accounts in the whole field of chemistry, including inorganic chemistry, organic chemistry, analytical chemistry, physical chemistry, polymer chemistry, applied chemistry, etc.Chinese Chemical Letters does not accept articles previously published or scheduled to be published. To verify originality, your article may be checked by the originality detection service CrossCheck.