- 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
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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
- Yang, Daobin,Jiao, Yan,Yang, Lin,Chen, Yao,Mizoi, Satoshi,Huang, Yan,Pu, Xuemei,Lu, Zhiyun,Sasabe, Hisahiro,Kido, Junji
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Read Online
- Synthesis and Photophysical Study of Heteropolycyclic and Carbazole Motif: Nickel-Catalyzed Chelate-Assisted Cascade C-H Activations/Annulations
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Herein, nickel-catalyzed synthesis of polyarylcarbazole through sequential C-H bond activations has been described. Regioselective indole C2/C3 functionalization has been achieved in the presence of indole C7-H, which is quite challenging. In addition, this approach also gives easy access to building a heteropolycyclic motif through C6/C7 C-H functionalization of indoline. This methodology is not limited to aromatic internal alkynes as coupling partners; aliphatic alkynes have also shown good tolerance. Notably, during the optimization the catalytic enhancement with sodium iodide as an additive has been observed. We have also studied the photophysical properties of these highly conjugated molecules.
- Prusty, Namrata,Banjare, Shyam Kumar,Mohanty, Smruti Ranjan,Nanda, Tanmayee,Yadav, Komal,Ravikumar, Ponneri C.
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supporting information
p. 9041 - 9046
(2021/11/30)
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- Dual-Active-Sites Design of Co@C Catalysts for Ultrahigh Selective Hydrogenation of N-Heteroarenes
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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.
- Zhang, Sai,Gan, Jie,Xia, Zhaoming,Chen, Xiao,Zou, Yong,Duan, Xuezhi,Qu, Yongquan
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supporting information
p. 2994 - 3006
(2020/09/04)
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- Redox-Neutral Coupling between Two C(sp3)?H Bonds Enabled by 1,4-Palladium Shift for the Synthesis of Fused Heterocycles
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The intramolecular coupling of two C(sp3)?H bonds to forge a C(sp3)?C(sp3) bond is enabled by 1,4-Pd shift from a trisubstituted aryl bromide. Contrary to most C(sp3)?C(sp3) cross-dehydrogenative couplings, this reaction operates under redox-neutral conditions, with the C?Br bond acting as an internal oxidant. Furthermore, it allows the coupling between two moderately acidic primary or secondary C?H bonds, which are adjacent to an oxygen or nitrogen atom on one side, and benzylic or adjacent to a carbonyl group on the other side. A variety of valuable fused heterocycles were obtained from easily accessible ortho-bromophenol and aniline precursors. The second C?H bond cleavage was successfully replaced with carbonyl insertion to generate other types of C(sp3)-C(sp3) bonds.
- Rocaboy, Ronan,Anastasiou, Ioannis,Baudoin, Olivier
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supporting information
p. 14625 - 14628
(2019/09/16)
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- 4 - Substituted benzene sulfonamide derivative and its preparation method and application
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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.
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Paragraph 0139; 0147-0150
(2018/04/21)
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- PYRAZOLOPYRIMIDINE DERIVATIVES USEFUL AS INHIBITORS OF BRUTON'S TYROSINE KINASE
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This invention relates to novel compounds. The compounds of the invention are tyrosine kinase inhibitors. Specifically, the compounds of the invention are useful as inhibitors of Bruton's tyrosine kinase (BTK). The invention also contemplates the use of the compounds for treating conditions treatable by the inhibition of Bruton's tyrosine kinase, for example cancer, lymphoma, leukemia and immunological diseases.
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Paragraph 00239; 00521
(2014/12/12)
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- Positive allosteric modulators of nicotinic acetylcholine receptor
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The present invention relates to compounds useful in therapy, to compositions comprising said compounds, and to methods of treating diseases comprising administration of said compounds. The compounds referred to are positive allosteric modulators (PAMs) of the nicotinic acetylcholine α7 receptor.
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Page/Page column 22
(2012/10/08)
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- FUSED HETEROCYCLIC RING COMPOUND
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A compound represented by the following formula or a salt thereof, which has an GPR119 agonist action, is useful for the prophylaxis or treatment of diabetes, obesity and the like, and shows superior efficacy: wherein P: substituted 6-membered aromatic ring, Q: (substituted) 6-membered aromatic ring, A1: CR4aR4b, NR4c, O, S, SO or SO2 {R4a-4c: H etc.}, L1: (substituted) C1-5 alkylene, L2: a bond or (substituted) C1-3 alkylene, L3-4: (substituted) C1-3 alkylene, R1: H, X, CN, (substituted) hydrocarbon, (substituted) heterocycle or (substituted) OH, or (substituted) 4- to 8-membered (heterocyclic) ring together with A1, R2: H, CN, (substituted) hydrocarbon, and R3a: -COSRA1, (substituted) 5- or 6-membered aromatic ring {RA1: (substituted) hydrocarbon or (substituted) heterocycle}.
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Page/Page column 92
(2012/01/11)
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- NOVEL OXABISPIDINE COMPOUNDS AND THEIR USE IN THE TREATMENT OF CARDIAC ARRHYTHMIAS
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There is provided compounds of formula (I), wherein R1, R2, R3, R4, R 41 to R46, A, B and G have meanings given in the description, which are useful in the prophylaxis and in the treatment of arrhythmias, in particular atrial and ventricular arrhythmias.
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Page/Page column 71
(2008/06/13)
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- Biarylmethyl indolines, indoles and tetrahydroquinolines, useful as serine protease inhibitors
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The present invention provides compounds of Formula (I): or a stereoisomer or pharmaceutically acceptable salt or hydrate form thereof, wherein the variables A, B, L1, L2, X1, X2, X3, X4 an
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