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We herein report a catalyst- and thiol-free method for synthesizing thioesters from arenes, carboxylic acids, and tetramethylthiourea in a one-pot process, by combining arene activation the interrupted Pummerer reaction with an electron donor-acceptor complex strategy. The method enables late-stage modification of complex bioactive molecules, and operates effectively under natural sunlight, highlighting its potential synthetic value.
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http://dx.doi.org/10.1039/d5sc05002b | DOI Listing |
Inorg Chem
September 2025
Yunnan Key Laboratory of Crystalline Porous Organic Functional Materials, College of Chemical and Materials Engineering, Qujing Normal University, Qujing 655011, China.
Sequential assembly of donor-acceptor components at the molecular level within a MOF is an effective strategy to achieve efficient electron-hole separation for enhancing the activity of photocatalysts. Meanwhile, the highly efficient and selective functionalization of tetrahydroisoquinoline (THIQ) under mild conditions remains an urgent demand in both the scientific and industrial communities. This work reports a donor-acceptor MOF photocatalyst () constructed by the coordinated assembly of donor and acceptor components, in which a naphthalene unit serves as an electron donor and a perylenediimide unit as an electron acceptor.
View Article and Find Full Text PDFJ Mater Chem B
September 2025
Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via Piero Gobetti, 85, Bologna 40129, Italy.
Donor-acceptor-donor (D-A-D) thiophene-based compounds, characterized by thiophene as a donor unit and benzothiadiazole (Bz) as an acceptor, represent an emerging class of theranostic agents for imaging and photodynamic therapy. Here, we expand this class of molecules by strategically varying the position of the electron-accepting unit within the oligothiophene (OT) backbone structure, realizing a series of different push-pull architectures (A-D, D-A-D, and D-A). This rational design allows for precise modulation of key photophysical parameters, including absorption and emission spectra, molar absorption coefficient, charge separation, and frontier molecular orbitals.
View Article and Find Full Text PDFChemistry
September 2025
International School for Optoelectronic Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China.
Alzheimer's disease (AD) is a neurodegenerative disease characterized by β-amyloid (Aβ) deposition, imposing significant social and economic burdens globally. Despite extensive efforts have been devoted to developing fluorescent probes for Aβ imaging, further improving the luminescent efficiency of prevailing probes still remains a significant challenge. Herein, we investigated the inner mechanism of constructing high-efficient Aβ probes via a structural cyclization strategy.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
September 2025
State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
Electrochemical synthesis of ammonia (NH) is a promising green alternative to the conventional Haber-Bosch process. Here, we report the synthesis of a heteroatomic metal-metal bonded dual atomic (DA) Mn-Cu catalytic site embedded within nitrogen-doped carbon (NC) matrix for high-performance electrochemical reduction of N to NH. The asymmetric electronic distribution localized at the dual atomic sites synergistically enhances the adsorption and activation of N, facilitating the complex proton-coupled electron transfer process.
View Article and Find Full Text PDFChem Sci
August 2025
College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Institute of Life Science and Green Development Hebei University Baoding Hebei 071002 P. R. China
The photocatalytic oxidative dipolar [3 + 2] cycloaddition reaction is a promising green approach for producing pyrrolo[2,1-]isoquinolines. However, developing sustainable cycloaddition methods with heterogeneous photocatalysts is still in its infancy, largely owing to their low reactivity and photostability. Herein, we propose a charge-oxygen synergy strategy through a dual-engineered covalent organic framework (COF) by integrating π-spacers with donor-acceptor motifs to promote intermolecular cycloaddition.
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