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JOURNAL OF ORGANIC CHEMISTRY · 2017 · IF 4.849

Making Flavone Thioethers Using Halides and Powdered Sulfur or Na2S2O3

Qiujie Tang,Zhaogang Bian,Wei Wu,Jin Wang,Ping Xie,Charles U. Pittman,Jr.,Aihua Zhou

The method for constructing C–S bonds is very important in organic synthesis. Here a new sulfenylation method to generate flavone thioether derivatives was developed by employing aromatic or alkyl halides, S powder and Na2S2O3 as reactants. Good yields of regioselective Calkyl–S and Caryl–S-substituted flavones were generated under relatively environmentally friendly and simple conditions. This method might be potentially applicable to large scale production, and it enriches current sulfenylation methods.

研究领域: 有机化学 · 药物合成

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ChemNanoMat · 2024 ·Vol. 11 ·期 1 ·e202400426 · IF 2.6

Optimized Tungsten Disulfide via Pyrolytic Deposition for Improved Zn-Ion Batteries

Yiting Wang,Xinran Zhao,Ruirui Cao,Jun Yang

The selection and optimization of cathode materials are crucial for enhancing the performance of aqueous zinc-ion batteries. In this work, different active materials were created by combining Sulfur powder and polydopamine in four different mass ratios. The novel N-doped carbon/WS 2 is obtained. Thanks to the optimization of the dopamine-carrying tungsten ion precursor and Sulfur powder (1 : 2, 1 : 4, 1 : 6 and 1 : 8), the four samples exhibited different morphology. The N−C/WS 2 -6-based zinc ion batteries with the highest specific capacity, 120.0 mAh/g in the first discharge at 2.0 A/g, and 78.0 mAh/g after 2500 cycles, with a capacity retention of 65 %, had a relatively good overall performance, according to the results. The reaction kinetics characteristics of the N−C/WS 2 -6 cathode reveal that diffusion has a significant impact on the processes in the aqueous zinc ionic material N−C/WS 2 -6.

研究领域: 材料科学 · 电化学 · 能源存储

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Making Flavone Thioethers Using Halides and Powdered Sulfur or Na2S2O3

Optimized Tungsten Disulfide via Pyrolytic Deposition for Improved Zn-Ion Batteries