The first example of an azidotrifluoromethoxylation of styrenes has been achieved by synergistic visible-light-mediated photoredox and silver catalysis. Trifluoromethyl arylsulfonate (TFMS) and the Zhdankin reagent were used as the trifluoromethoxylation reagent and the azide source, respectively. A good functional group tolerance and mild reaction conditions of this method are applicable to late-stage azidotrifluoromethoxylation of complex small molecules. Furthermore, the mechanistic investigations indicate the single-electron transfer involved in the reaction.
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http://dx.doi.org/10.1039/c8cc01096j | DOI Listing |
Polymers (Basel)
August 2024
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
Converting carbon dioxide (CO) into high-value-added chemicals using solar energy is a promising approach to reducing carbon dioxide emissions; however, single photocatalysts suffer from quick the recombination of photogenerated electron-hole pairs and poor photoredox ability. Herein, silver (Ag) nanoparticles featuring with localized surface plasmon resonance (LSPR) are combined with g-CN to form a Schottky junction for photothermal catalytic CO reduction. The Ag/g-CN exhibits higher photocatalytic CO reduction activity under UV-vis light; the CH and CO evolution rates are 10.
View Article and Find Full Text PDFNat Commun
July 2024
Department of Chemistry, Sungkyunkwan University, 2066 Seobu-Ro, Suwon, 16419, Republic of Korea.
Currently, conventional dimethoxymethane synthesis methods are environmentally unfriendly. Here, we report a photo-redox catalysis system to generate dimethoxymethane using a silver and tungsten co-modified blue titanium dioxide catalyst (Ag.W-BTO) by coupling CO reduction and CHOH oxidation under mild conditions.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
February 2024
State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Xili, Nanshan District, Shenzhen, 518055, China.
The first total synthesis of incarnatapeptins A and B, two novel marine natural products, was accomplished from readily available (S)-1-benzyloxycarbonylhexahydropyridazine-3-carboxylic acid. This route, whose longest linear sequence was 12 steps, provided the incarnatapeptins A and B in yields of 26.5 % and 19.
View Article and Find Full Text PDFPolymers (Basel)
March 2023
CNRS, IS2M UMR 7361, Université de Haute-Alsace, F-68100 Mulhouse, France.
The copper II complex's novel benzimidazole Schiff base ligands were manufactured and gauged as a new photoredox catalyst/photoinitiator amalgamated with triethylamine (TEA) and iodonium salt (Iod) for the polymerization of ethylene glycol diacrylate while exposed to visible light by an LED Lamp at 405 nm with an intensity of 543 mW/cm at 28 °C. Gold and silver nanoparticles were obtained through the reactivity of the copper II complexes with amine/Iod salt. The size of NPs was around 1-30 nm.
View Article and Find Full Text PDFOrg Lett
December 2022
Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow 117198, Russia.
An unprecedented electrochemical three-component reaction of phenylacetylene, sulfinate, and -(formyl)anilide was discovered. The transformation occurs in an undivided cell with a graphite anode and cathode in DMF in the presence of tetrabutylammonium iodide as an electrolyte. The addition of silver(I) oxide and catalytic amounts of iodine facilitated the reaction significantly.
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