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We presented a Selectfluor-mediated direct oxidative -arylation of -acyl sulfenamides with naphthols via an oxidation to sulfinimidoyl fluoride/nucleophilic substitution cascade process. Notably, this methodology is time-efficient, operationally safe, and easily scalable without requiring prefunctionalized arenes or transition-metal catalysts. It exhibits excellent functional-group compatibility, providing a series of sulfilimines in good to high yields (40 examples, up to 95%).
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http://dx.doi.org/10.1021/acs.joc.5c01304 | DOI Listing |
J Am Chem Soc
September 2025
Shenzhen Key Laboratory of Cross Coupling Reactions & Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China.
Currently, most sulfoximine clinical candidates feature both -aryl and -alkyl substituents. The asymmetric synthesis of these compounds typically relies on oxidizing corresponding enantioenriched sulfilimines. Herein, we describe an effective catalytic system comprising CuI and an azabicyclo[2.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
September 2025
Wöhler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany.
Nickel electrocatalysis has emerged as a powerful strategy for sustainable C─H activation, offering an environmentally benign alternative to traditional methods based on stoichiometric oxidants. We, herein, report a nickela-electrocatalyzed approach for the expedient synthesis of β-arylated pyrroles via a unique multiple dehydrogenative C─H activation approach. Hence, direct C─C bond formation between pyrroles and arenes was enabled, obviating the need for prefunctionalized substrates.
View Article and Find Full Text PDFChemistry
August 2025
Department of Chemistry, University of Patras, Rio Campus, Achaia, 26504, Greece.
Alzheimer's Disease (AD) impacts significantly the quality of life of people aged over 65 years old, while millions more suffer from other types of dementia, yet no effective drugs exist. The few approved drugs in this area address mostly the associated symptoms, while several selective agents acting on promising targets have failed in clinical trials. The complexity of neurodegenerative diseases has prompted multitargeting ligands as the new paradigm, where more than one biological mechanism may be perturbed synergistically.
View Article and Find Full Text PDFJ Am Chem Soc
September 2025
The Institute for Advanced Studies (IAS), Wuhan University, Wuhan 430072 Hubei, P. R. China.
Achieving chemoselective C(sp)-O bond formation in the presence of unprotected hydroxyl groups remains a formidable challenge, owing to the inherent oxidative sensitivity of phenols and the distinct acidity between phenols and aliphatic alcohols. Herein, we unveil a switchable chemoselectivity mechanism in an electrochemical nickel-catalyzed system that couples aryl and alkenyl halides with phenols and aliphatic alcohols under mild conditions. The addition of catalytic sodium acetate (NaOAc) promotes selective arylation of phenols potentially through modulating electron transfer kinetics and stabilizing a six-membered nickel-phenoxide metallacycle, which may facilitate ligand exchange and accelerate reductive elimination.
View Article and Find Full Text PDFChemistry
August 2025
Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600 036, India.
Scholl-type oxidative aryl-aryl coupling is a powerful strategy for constructing extended π-systems, yet achieving regioselectivity and stepwise control remains a formidable challenge. Here, we report a systematic study on tetraarylthiophene (TAT) frameworks, revealing how subtle electronic effects of aryl substituents govern C─C bond formation efficiency, selectivity, and pathways. Guided by electrochemical potentials and Hammett σ constants, we establish a reactivity trend-OMe > Me > Bu > H > Ph > F > Cl > CHO > CF-revealing that electron-rich aryls promote efficient coupling, while electron-deficient groups suppress reactivity.
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