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The increase in the amount of carbon dioxide (CO) emissions related to many anthropic activities is a persistent and growing problem. During the last years, many solutions have been set out, none of them being the ultimate one. Investigators agree on the need of a synergic approach to the problem, in terms of many complementary methods of sequestration that, combined with the reduction of production, will be able to decrease the concentration of the CO in the atmosphere. In this work, we explore the use of a green reaction to trap the CO into a stable crystalline phase (weddellite) resorting to a multidisciplinary approach. CO is reduced and precipitated as calcium oxalate through vitamin C as a sacrificial reductant. Calcium oxalate crystals obtained show a startling good quality that increases their already great stability over a wide chemical and physical conditions' range.
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http://dx.doi.org/10.1016/j.scitotenv.2019.02.114 | DOI Listing |
Chem Biodivers
September 2025
State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan & Yunnan Key Laboratory of Basic Research and Innovative Application for Green Biological Production, Key Laboratory for Microbial Resources of the Ministry of Education, School of Life Sciences, Yunnan University, Kunm
Understanding the determinants of lifespan is a central objective in biology. Lifespan is shaped by dynamic, stage-specific changes in metabolism, energy allocation, and genome integrity. Heart rate serves as a physiological marker that reflects both life stage and metabolic state.
View Article and Find Full Text PDFJ Am Chem Soc
September 2025
Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
The direct cross-coupling of unactivated alkyl halides with aryl or heteroaryl partners remains a fundamental challenge in synthetic chemistry due to their inertness and propensity for side reactions. Herein, we report a transition-metal-free electrochemical halogen-atom transfer strategy that enables efficient alkyl radical cross-coupling via convergent paired electrolysis. In this system, anodically generated α-aminoalkyl radicals mediate the activation of alkyl iodides, while aryl/heteroaryl aldehydes or nitriles undergo cathodic reduction to afford persistent ketyl radical anions or aryl radical anions.
View Article and Find Full Text PDFAcc Chem Res
September 2025
Department of Chemistry, FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street W, Montréal, Québec H3A 0B8, Canada.
ConspectusMolecular photochemistry, by harnessing the excited states of organic molecules, provides a platform fundamentally distinct from thermochemistry for generating reactive open-shell or spin-active species under mild conditions. Among its diverse applications, the resurgence of the Minisci-type reaction, a transformation historically reliant on thermally initiated radical conditions, has been fueled by modern photochemical strategies with improved efficiency and selectivity. Consequently, the photochemical Minisci-type reaction ranks among the most enabling methods for C()-H functionalizations of heteroarenes, which are of particular significance in medicinal chemistry for the rapid diversification of bioactive scaffolds.
View Article and Find Full Text PDFInorg Chem
September 2025
Department of Chemistry, Panskura Banamali College, Panskura RS, Purba Medinipur, WB 721152, India.
We report the synthesis and characterization of a new Schiff base ligand (HL), derived from 2-picolylamine and 2-hydroxy-3-methoxy-5-methylbenzaldehyde. Its reaction with Ni(NO)·6HO and Ln(NO)·HO (Ln = Gd, Tb, Dy) in the presence of triethylamine affords a carbonato-bridged family of heterobimetallic NiLn complexes: [NiLn(L)(L')(μ-CO)(NO)]·MeOH·HO (). During the complexation reaction, ligand HL undergoes an oxidation, followed by C-C coupling to generate a secondary ligand (HL').
View Article and Find Full Text PDFOrg Lett
September 2025
School of Chemistry and Chemical Engineering, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, Guangxi University, Nanning 530004, China.
Vinylphosphonates serve as crucial components in synthetic chemistry, medicinal chemistry, and materials science. However, traditional synthetic methods for these compounds typically require the use of noble metal catalysts and hazardous reagents. Herein, we report a metal-free strategy for the divergent synthesis of vinylphosphonates through the P nucleophilic addition of vinylidene -quinone methides (-VQMs).
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