15861-23-1Relevant articles and documents
Cyano-substitution on the end-capping group: Facile access toward asymmetrical squaraine showing strong dipole-dipole interactions as a high performance small molecular organic solar cells material
Yang, Daobin,Jiao, Yan,Yang, Lin,Chen, Yao,Mizoi, Satoshi,Huang, Yan,Pu, Xuemei,Lu, Zhiyun,Sasabe, Hisahiro,Kido, Junji
, p. 17704 - 17712 (2015)
A novel asymmetrical squaraine derivative bearing a cyano-substituted indoline end-capping group, namely ASQ-5-CN, was designed and synthesized. In comparison with the noncyano-substituted ASQ-5, ASQ-5-CN showed an analogous absorption band-gap in the thi
Dual-Active-Sites Design of Co@C Catalysts for Ultrahigh Selective Hydrogenation of N-Heteroarenes
Zhang, Sai,Gan, Jie,Xia, Zhaoming,Chen, Xiao,Zou, Yong,Duan, Xuezhi,Qu, Yongquan
supporting information, p. 2994 - 3006 (2020/09/04)
The dual-active-sites Co@C catalyst provides a general powerful strategy to break the limitation of scaling relation on traditional metal surfaces and thus affords unprecedentedly selective hydrogenation of various N-heteroarenes as well as high activity and stability. A porous carbon shell not only allows H2 diffusion to Co sites for activation but also blocks accessibility of N-heteroarenes, and the hydrogenation of N-heteroarenes is achieved on carbon by the spilled hydrogen from Co sites. In addition, the presence of surface/subsurface carbon at the Co sites shows high anti-sulfur poisoning and anti-oxidant capability. Ideal heterogeneous metal hydrogenation catalysts are featured by simultaneously high activity, selectivity, and stability. Herein, we report a general yet powerful strategy to design and fabricate dual-active-sites Co@C core-shell nanoparticle for boosting selective hydrogenation of various N-heteroarenes. It can break the limitation of scaling relation on traditional metal surfaces, and thus afford unprecedentedly high selectivity, activity, and stability. Combining kinetics analysis and DFT calculations with multiple techniques directly unveil that the critical porous carbon shell with a pore size of 0.53 nm not only allows H2 diffusion to Co sites for activation and blocks accessibility of N-heteroarenes but also catalyzes hydrogenation of N-heteroarenes via hydrogen spillover from Co sites. In addition, the presence of surface/subsurface carbon at the Co sites shows high anti-sulfur poisoning and anti-oxidant capability. This work is valuable for guiding the design and manipulation of cost-effective and robust hydrogenation catalysts. Our research can provide an environmentally friendly approach to afford unprecedentedly selective N-heteroarenes hydrogenation, which will greatly reduce the resource and energy consumption and decrease the amount of waste discharge and water pollution. Therefore, these results could help in achieving the “Clean water and sanitation” goal in the 10 UN Sustainable Development Goals. Meanwhile, the products of N-heteroarenes hydrogenation are the core structural motifs in both fine and bulk chemicals, which will make our life more beautiful. Thus, our research also benefits the “Good health and well-being” goal.
4 - Substituted benzene sulfonamide derivative and its preparation method and application
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Paragraph 0139; 0147-0150, (2018/04/21)
The present invention discloses a class of new 4-substituted benzene sulfonamide derivatives represented by a formula (I), wherein the 4-substituted benzene sulfonamide derivatives have good antitumor activity, and each group is defined in the specification. The present invention further discloses a preparation method of the derivative, a pharmaceutical composition containing the derivative, and applications of the 4-substituted benzene sulfonamide derivative and the pharmaceutical composition containing the derivative as the antitumor drug. The formula I is defined in the specification.
