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I-Catalyzed benzylation of NH-sulfoximines with diarylmethanes and alkylarenes.
Org Biomol Chem
January 2025
College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
A practical transition metal-free approach for the selective benzylation of NH-sulfoximines has been disclosed by using simple elemental iodine as the catalyst and -butyl hydroperoxide (TBHP) as the terminal oxidant. Comparing with known methods for the construction of -benzylated sulfoximines, our protocol shows broad substrate scope with respect to both diarylmethanes and alkylarenes, and can be conducted in air with good functional group tolerance.
View Article and Find Full Text PDFSurface immobilization of single atoms on heteroatom-doped carbon nanospheres through phenolic-mediated interfacial anchoring for highly efficient biocatalysis.
Chem Sci
January 2025
BMI Center for Biomass Materials and Nanointerfaces, National Engineering Laboratory for Clean Technology of Leather Manufacture, Ministry of Education Key Laboratory of Leather Chemistry and Engineering, College of Biomass Science and Engineering, Sichuan University Chengdu Sichuan 610065 China
Single-atom catalysts (SACs) dispersed on support materials exhibit exceptional catalytic properties that can be fine-tuned through interactions between the single atoms and the support. However, selectively controlling the spatial location of single metal atoms while simultaneously harmonizing their coordination environment remains a significant challenge. Here, we present a phenolic-mediated interfacial anchoring (PIA) strategy to prepare SACs with Fe single atoms anchored on the surface of heteroatom-doped carbon nanospheres.
View Article and Find Full Text PDFPrecise photorelease in living cells by high-viscosity activatable coumarin-based photocages.
Chem Sci
January 2025
School of Biomedical Engineering, Shanghai Jiao Tong University Shanghai 200240 China
Intracellular viscosity is a critical microenvironmental factor in various biological systems, and its abnormal increase is closely linked to the progression of many diseases. Therefore, precisely controlling the release of bioactive molecules in high-viscosity regions is vital for understanding disease mechanisms and advancing their diagnosis and treatment. However, viscosity alone cannot directly trigger chemical reactions.
View Article and Find Full Text PDFA multilayered regulatory network mediated by protein phosphatase 4 controls carbon catabolite repression and de-repression in Magnaporthe oryzae.
Commun Biol
January 2025
Xianghu Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, China.
Carbon catabolite repression (CCR) and de-repression (CCDR) are critical for fungal development and pathogenicity, yet the underlying regulatory mechanisms remain poorly understood in pathogenic fungi. Here, we identify a serine/threonine protein phosphatase catalytic subunit, Pp4c, as essential for growth, conidiation, virulence, and the utilization of carbohydrates and lipids in Magnaporthe oryzae. We demonstrate that the protein phosphatase 4 complex (Pp4c and Smek1 subunits), the AMP-activated protein kinase (AMPK) Snf1, and the transcriptional regulators CreA (repressor) and Crf1 (activator) collaboratively regulate the utilization of non-preferred carbon sources.
View Article and Find Full Text PDFEnergizing Robust Sulfur/Lithium Electrochemistry via Nanoscale-Asymmetric-Size Synergism.
J Am Chem Soc
January 2025
State Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen 361005, China.
Sluggish redox kinetics and dendrite growth perplex the fulfillment of efficient electrochemistry in lithium-sulfur (Li-S) batteries. The complicated sulfur phase transformation and sulfur/lithium diversity kinetics necessitate an all-inclusive approach in catalyst design. Herein, a compatible mediator with nanoscale-asymmetric-size configuration by integrating Co single atoms and defective CoTe (Co-CoTe@NHCF) is elaborately developed for regulating sulfur/lithium electrochemistry synchronously.
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