(E)-2-Styrylanthracene derivatives containing triisopropylsilylacetylene groups at the 9 and 10 positions were synthesized and characterized. The electronic properties have been studied by DFT calculations, spectroscopy and electrochemistry, revealing asymmetric resonance stabilization effects that result in the regioselective formation of an unusual cyclic vinylene sulfate.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/c2cc32805d | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Development of Fluorine-Free Electrolytes for Aqueous-Processed Olivine-Type Phosphate Cathodes.
Molecules
October 2024
Faculty of Chemistry, Warsaw University of Technology, 00-664 Warsaw, Poland.
Environmental impacts and resource availability are significant concerns for the future of lithium-ion batteries. This study focuses on developing novel fluorine-free electrolytes compatible with aqueous-processed cobalt-free cathode materials. The new electrolyte contains lithium 1,1,2,3,3-pentacyanopropenide (LiPCP) salt.
View Article and Find Full Text PDFRh(III)- or Ru(II)-Catalyzed C-H Annulation with Vinylene Carbonate and an Unexpected Aerobic Oxidation/Deprotection Cascade to Yield Cinnolin-4(1)-ones.
J Org Chem
October 2024
Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
Article Synopsis
- Transition metal-catalyzed C-H annulation reactions have been commonly used to synthesize N-protected cinnolines, but previously, cinnolin-4(1)-ones remained unattainable.
- The study introduces a new method for creating cinnolin-4(1)-ones using Rh(III) or Ru(II) catalysts combined with a sequence of reactions involving cyclic hydrazides and vinylene carbonate.
- The research also highlights the significance of π-conjugation in the directing groups and provides detailed mechanistic insights through the characterization of a seven-membered enolic Rh species using mass spectroscopy.
Vinylene-Linked Donor-π-Acceptor Metal-Covalent Organic Framework for Enhanced Photocatalytic CO Reduction.
Angew Chem Int Ed Engl
November 2024
School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China.
Intramolecular charge separation driving force and linkage chemistry between building blocks are critical factors for enhancing the photocatalytic performance of metal-covalent organic framework (MCOF) based photocatalyst. However, robust achieving both simultaneously has yet to be challenging despite ongoing efforts. Here we develop a fully π-conjugated vinylene-linked multivariate donor-π-acceptor MCOF (D-π-A, termed UJN-1) by integrating benzyl cyanides linker with multiple functional building blocks of electron-rich triphenylamine and electron-deficient copper-cyclic trinuclear units (Cu-CTUs) moieties, featuring with strong intramolecular charge separation driving force, extended conjugation degree of skeleton, and abundant active sites.
View Article and Find Full Text PDFConstructing LiF-Dominated Interphases with Polymer Interwoven Outer Layer Enables Long-Term Cycling of Si Anodes.
ACS Nano
March 2024
School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, People's Republic of China.
Constructing a robust solid electrolyte interphase (SEI) is extremely critical to developing high-energy-density silicon (Si)-based lithium-ion batteries. However, it is still elusive how to accurately manipulate the chemical composition and structure of the SEI layer. Herein, a LiF-dominated SEI film intertwined by a highly elastic polymer is achieved by regulating the defluorination mechanism of the fluorinated carbonate additive on the Si electrode surface.
View Article and Find Full Text PDFRhodium-catalyzed divergent dehydroxylation/alkenylation of hydroxyisoindolinones with vinylene carbonate.
Chem Commun (Camb)
December 2023
Key Laboratory of Chemical Additives for China National Light Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
Herein, a novel organic transformation involving rhodium-catalyzed divergent dehydroxylation/alkenylation of hydroxyisoindolinone with vinylene carbonate is reported, and a series of architecturally rigid and widely used spirolactams are obtained with excellent functional group tolerance and high selectivity. Remarkably, the promising vinylene carbonate reagent presents a distinct chemical reactivity as a vinyl-oxygen cyclic synthon and first transfers the C-H bond to spiroheterocycle scaffolds. Moreover, another chemoselectivity, direct dehydrogenative coupling with vinylene carbonate, is also presented.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!