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About the Cover:Multi-substituted benzothiophene skeleton is an impor- tant synthetic intermediate. A practical method for the synthesis of such compounds via the insertion reaction of diazo compounds catalyzed by transition metals is provided by Cui, Jin, Huang, Qin and Ji on page 2501. This method features mild conditions and practical effi-ciency. Biological activity of several products was tested against cell lines including NIH-3T3, B16-F10, 4T1, and HCT116. -
About the Cover:The molecular design and applications of cyclometalated iridium(III) complexes [Ir(C^N)?(N^N)]? are summarized by Shi, Li and Li on page 2389. It focuses on strategies to improve visible light absorption and excited-state lifetimes, along with applications in photocatalytic synthesis and TTA-UC, highlighting correlations between structure and photosensitivity. This summary provides insights for developing high-performance iridium complexes. -
About the Cover:Chronic obstructive pulmonary disease (COPD) has garnered increased attention as a result of its persistent symptoms, which undermine patients? quality of life. Fudosteine has substantial advantages in the treatment of COPD due to its high efficacy and low adverse effects. Fudosteine sulfonamide derivatives Series I and amine derivatives Series II were designed and synthesized, and their biological activities were evaluated by Sun, Gui, Cheng, Yang and Li on page 2566. -
About the Cover:A novel Cs2CO3-promoted hydrocyanide reaction of the directing group-protected N-(quinolin-8-yl)but-3-enami- des with trimethylsilyl cyanide to afford 3-cyanobutyl- amides is described by Zhu, Cui and Zeng on page 2529. Mechanistic studies have shown that this reaction is a nucleophilic addition reaction of double bonds rather than a free radical reaction. The reaction has good chemoselectivity, and the substrate has a wide range of applicability.
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