We have found that the use of fluoroalcohol media greatly enhanced the efficiency and scope of the direct dehydrative condensation of arenes and hypervalent iodine(III) compounds; the present clean method has a broad range of applicability as well as unique selectivity in the aromatic substrates, and is highly efficient even in polymer functionalization.
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http://dx.doi.org/10.1039/b708802g | DOI Listing |
Nat Chem
January 2025
Department of Chemistry, University of California Irvine, Irvine, CA, USA.
Controlling reaction outcomes through external influences is a central goal in chemistry. Vibrational coupling between molecular vibrations and cavity modes is rapidly emerging as a distinct strategy compared with conventional thermochemical and photochemical methods; however, insight into the fundamental mechanisms remains limited. Here we investigate how vibrational weak and strong coupling in plasmonic nanocavities modifies the thermal dehydration of copper sulfate pentahydrate.
View Article and Find Full Text PDFMiddle East J Dig Dis
October 2024
Department of Colorectal Surgery, Colorectal Research Center, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran.
Background: Low anterior resection (LAR) is the gold standard for curative cancer treatment in the middle and upper rectum. In radically operated patients, the local recurrence rates with total mesorectal excision (TME) after 5 and 10 years was<10%, with 80% in 5 years survival. Anastomotic leakage (AL) affects 4%-20% of patients who underwent LAR.
View Article and Find Full Text PDFEES Catal
December 2024
Department of Chemical Engineering, Delft University of Technology 2629 HZ Delft The Netherlands
Electrochemical CO reduction offers a promising method of converting renewable electrical energy into valuable hydrocarbon compounds vital to hard-to-abate sectors. Significant progress has been made on the lab scale, but scale-up demonstrations remain limited. Because of the low energy efficiency of CO reduction, we suspect that significant thermal gradients may develop in industrially relevant dimensions.
View Article and Find Full Text PDFTherapie
December 2024
CHU Lille, University Lille, Intensive Médecine Reanimation, 59000 Lille, France.
Cell
January 2025
Department of Molecular and Cell Biology and School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA. Electronic address:
Understanding protein function would be facilitated by direct, real-time observation of chemical kinetics in the atomic structure. The selectivity filter (SF) of the K channel provides an ideal model, catalyzing the dehydration and transport of K ions across the cell membrane through a narrow pore. We used a "pump-probe" method called electric-field-stimulated time-resolved X-ray crystallography (EFX) to initiate and observe K conduction in the NaK2K channel in both directions on the timescale of the transport process.
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