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Catalytic kinetic resolution of helical polycyclic phenols via an organocatalyzed enantioselective dearomative amination reaction.
Sci Adv
November 2024
Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China.
Despite the considerable potential applications for helically chiral molecules across various sectors, their catalytic asymmetric synthesis remains nascent and has seen very limited advancement compared to that of central and axial chiral compounds, primarily owing to the scarcity of available starting materials and the immense challenges associated with achieving stereochemical control. Herein, we report an innovative approach to the facile synthesis and catalytic kinetic resolution of uniquely structured and stereochemically complex helical polycyclic phenols by using a steric hindrance-regulated enantioselective dearomative amination reaction. The distinguished aspects of this method include the exceptional stability of the dearomatized products and impressive versatility of the recovered substrates in the construction of enantioenriched helical frameworks.
View Article and Find Full Text PDFAn electrochemical sensor based on FeCo bimetallic single-atom nanozyme for sensitive detection of HO.
Anal Chim Acta
November 2023
Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing, 400044, PR China; Chongqing Engineering and Technology Research Center of Intelligent Rehabilitation and Eldercare, Chongqing City Management College, Chongqing, 401331, PR China. Electronic address:
Efficient catalytic decomposition of HO is accompanied by electron transfer through Fe-N active sites of hemin in the human body. Inspired by this reaction process, the Fe SAs/Co CNs were successfully synthesized by combined Co atomic sites with nitrogen-carbon doped Fe single-atom active sites (SAs). The synergy between transition metals not only reduces agglomeration during synthesis but also improves its own electrical conductivity due to the interaction between Fe and Co that promotes the formation of graphite surface.
View Article and Find Full Text PDFInterface engineering of hierarchical flower-like N, P, O-doped NiP self-supported electrodes for highly efficient water-to-hydrogen fuel/oxygen conversion.
J Colloid Interface Sci
September 2024
Institute of Advanced Energy Storage Technology and Equipment, Ningbo University, Ningbo 315211, China. Electronic address:
Rational construction of efficient bifunctional catalysts with robust catalytic activity and durability is significant for overall water splitting (conversion between water and hydrogen fuel/oxygen) using non-precious metal systems. In this work, the hierarchically porous N, P, O-doped transition metal phosphate in the Ni foam (NF) electrode (hollow flower-like NPO/NiP@NF) was prepared through facile hydrothermal method coupled with phosphorization treatment. The hierarchical hollow flower-like NPO/NiP@NF electrodes exhibited high bifunctional activity and stability for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline solutions.
View Article and Find Full Text PDFAsymmetric synthesis of P-stereogenic phosphindane oxides via kinetic resolution and their biological activity.
Nat Commun
March 2024
Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China.
The importance of P-stereogenic heterocycles has been widely recognized with their extensive use as privileged chiral ligands and bioactive compounds. The catalytic asymmetric synthesis of P-stereogenic phosphindane derivatives, however, remains a challenging task. Herein, we report a catalytic kinetic resolution of phosphindole oxides via rhodium-catalyzed diastereo- and enantioselective conjugate addition to access enantiopure P-stereogenic phosphindane and phosphindole derivatives.
View Article and Find Full Text PDFKinetic Resolution of Sulfoximines via Asymmetric Organocatalyzed Formation of Benzothiadiazine-1-oxides.
Org Lett
March 2024
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.
A catalytic kinetic resolution of sulfoximines has been developed through chiral phosphoric acid-catalyzed intramolecular dehydrative cyclizations. A variety of racemic sulfoximines bearing an -amidophenyl moiety underwent asymmetric dehydrative cyclizations using this method, yielding both the recovered sulfoximines and benzothiadiazine-1-oxide products with good to high enantioselectivities (with -factor up to 61). The diverse derivatizations of the chiral products into a wide range of S-stereogenic center-containing S,N-heterocycles have demonstrated the value of this method.
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