阿拉丁SCI论文搜索工具

Green Processing and Synthesis · 2022 ·Vol. 11 ·期 1 ·823-829 · IF 3.97

Palladium-mediated base-free and solvent-free synthesis of aromatic azo compounds from anilines catalyzed by copper acetate

Bo Jiang,Yue-Yue Du,Guo-Zhi Han

Herein, we report a new one-step direct synthesis of aromatic azo compounds from anilines under mild conditions. With the catalysis of copper acetate mediated by palladium salt, rapid conversion of anilines to aromatic azo compounds can be observed under the conditions of base-free along with solvent-free. Furthermore, the cross-coupling nitridation reaction based on this strategy was also studied. This research provides not only a new way for the synthesis of symmetrical and asymmetrical aromatic azo compounds but also a strategy and platform for exploring catalytic applications of transition metal compounds.

研究领域: 有机化学 · 催化化学

✓ 已验证 DOI 高影响因子

查看原文查看 PubMed

Molecular Catalysis · 2020 · IF 3.687

Design of hypercrosslinked poly(ionic liquid)s for efficiently catalyzing high-selective hydrogenation of phenylacetylene under ambient conditions

Hongbing Song,Yule Liu,Yongjie Wang,Bingxiao Feng,Xin Jin,Tingting Huang,Meng Xiao,Hengjun Gai

In this study, a series of hypercrosslinked poly(ionic liquid)s (HCPILs) formed from imidazolium tetrachloropalladate were successfully fabricated for selective hydrogenation of phenylacetylene. Its textural properties can be tuned by the different molar ratios of reactants, thereby adjusting its active sites. The synthetic HCPILs were analyzed using various characterization techniques. Due to the constraint of the microporous structure and the charge effect of ionic liquid moieties in the HCPILs, palladium nanoparticles generated from HCPILs were reduced in situ during hydrogenation of phenylacetylene and highly dispersed. Amongst which catalyst a-4 with the largest pore-volume performed the best selectivity (97.3 %) to styrene at 96 % phenylacetylene conversion under the conditions of 308 K and 1 atm H 2 pressure. Furthermore, the activity and selectivity of the catalyst did not change considerably in solvents with different polarities. Even after repeated the catalytic experiments for five times, the catalyst displayed no significant loss for activity and selectivity. This work shows industrial application potential and a developing direction in the selective hydrogenation process.

CAS / MDL: 100-44-7 109-87-5 100-41-4 7647-10-1 536-74-3 100-42-5 18156-74-6

研究领域: 材料科学 · 催化 · 化学工程

✓ 已验证产品关联 DOI 高影响因子

查看原文查看 PubMed

查找使用阿拉丁产品的科研文献

与阿拉丁产品相关的已发表科研成果

热门产品

Palladium-mediated base-free and solvent-free synthesis of aromatic azo compounds from anilines catalyzed by copper acetate

Design of hypercrosslinked poly(ionic liquid)s for efficiently catalyzing high-selective hydrogenation of phenylacetylene under ambient conditions