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An efficient one-pot sequential hydrogen isotope exchange (HIE)/reductive deuteration approach was developed for the preparation of α,β-deuterated alcohols using ketones as the precursors. The HIE step can also be used for the synthesis of α-deuterated ketones. This method has been applied in the synthesis of four deuterated drug and MS internal standards.
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http://dx.doi.org/10.1021/acs.orglett.2c01940 | DOI Listing |
RSC Adv
September 2025
Department of Chemistry, University of Rajasthan Jaipur 302004 India
A one-pot strategy was developed for the synthesis of α-substituted 2-benzofuranmethamines from salicylaldehydes, phenylacetylenes, and cyclic secondary amines using CuFeO as a bifunctional catalyst. The reaction proceeds at 80 °C in 1,4-dioxane using CsCO as a base, enabling sequential A-coupling, 5--dig cyclization, and 1,3-allylic rearrangement in a single operation. Unlike previous methods, this protocol employs non-precious metal catalysts and mild reagents, operates under moderate conditions, and provides direct access to α-substituted 2-benzofuranmethamines in good yields (80-96%) with broad substrate compatibility.
View Article and Find Full Text PDFChem Commun (Camb)
September 2025
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China.
We report here a one-pot iodonium-Claisen rearrangement of aryl iodanes with acetonitrile, which enables -cyanomethylation of aryl iodanes to produce valuable arylacetonitriles. The reaction proceeds through preparation of (trimethylsilyl) acetonitrile by treating the readily available solvent MeCN with TMSOTf and DIPEA, followed by its interaction with aryl iodanes. Notably, the sequential use of two electrophilic reagents (TMSOTf and BF·EtO) to activate aryl iodanes is critical for driving the rearrangement.
View Article and Find Full Text PDFBiosens Bioelectron
September 2025
Department of Biological Sciences, Faculty of Science, National University of Singapore, 117543, Singapore; Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore; Precision Medicine Translational Research Programme (TRP), Yong Loo Lin School
DNAzymes possessing kinase-like activities have long held theoretical promise, yet their practical implementation has remained significantly limited. Notably, DNAzyme kinase 1 (DK1), discovered over two decades ago, exhibits a unique self-phosphorylation capability upon encountering specific substrates like ATP, but its broad-based and programmable applications have not yet been fully realized. In this study, we innovatively couple DK1's autophosphorylation mechanism with the PfAgo to establish a novel programmable cascade sensing platform named RASTEN (Robust pfAgo-based Strategy for POC Testing Non-nucleic Acid and Nucleic Acid).
View Article and Find Full Text PDFChemSusChem
September 2025
Organic Chemistry Institute, University of Münster, Corrensstraße 36, 48149, Münster, Germany.
A three-step, one-pot, sequential cascade starting from simple feedstocks to increase complexity toward value-added chiral synthetic building blocks is reported. This is achieved by precisely integrating organic photocatalysis and noncovalent organocatalysis, often operating at dissimilar conditions and reaction media. In particular, this strategy is used to enable the direct transformation of readily available benzylic substrates, such as methylbenzenes, benzyl alcohols, or amines, into enantioenriched α-aminonitriles by benzylic CH photooxidation to their corresponding aldehydes, followed by in situ imine formation and final asymmetric organocatalytic Strecker reaction.
View Article and Find Full Text PDFChemistry
September 2025
Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, D-40225, Düsseldorf, Germany.
Di(hetero)aroyl dichlorides are desymmetrized upon sequential reaction with alcohols and 2-methyl N-benzyl thiazolium salts within the course of a one-pot three-component reaction yielding ester-substituted aroyl-S,N-ketene acetals under mild conditions in good yields. A prerequisite for the concise one-pot process is the different nucleophilicity of the alcohols and in situ generated S,N-ketene acetals. The resulting compounds are merocyanines with dominant charge-transfer absorption bands which are fluorescent in the solid state, but not in solution.
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