Results 11 to 20 of about 32,899 (265)

Hydrogenation of β-Keto Sulfones to β-Hydroxy Sulfones with Alkyl Aluminum Compounds: Structure of Intermediate Hydroalumination Products

Molecules, 2022
β-Hydroxy sulfones are important in organic synthesis. The simplest method of β-hydroxy sulfones synthesis is the hydrogenation of β-keto sulfones. Herein, we report the reducing properties of alkyl aluminum compounds R3Al (R = Et, i-Bu, n-Bu, t-Bu and n-
Michał Kotecki, Zbigniew Ochal, Paweł Socha, Vadim Szejko, Łukasz Dobrzycki, Mariola Stypik, Wanda Ziemkowska   +6 more
doaj   +1 more source

Chloroaluminate Ionic Liquid Immobilized on Magnetic Nanoparticles as a Heterogeneous Lewis Acidic Catalyst for the Friedel–Crafts Sulfonylation of Aromatic Compounds

Molecules, 2022
Chloroaluminate ionic liquid bound on magnetic nanoparticles (Fe3O4@O2Si[PrMIM]Cl·AlCl3) was prepared and used as a heterogenous Lewis acidic catalyst for the Friedel–Crafts sulfonylation of aromatic compounds with sulfonyl chlorides or p-toluenesulfonic
Ngoc-Lan Thi Nguyen, Quoc-Anh Nguyen, Tien Khoa Le, Thi Xuan Thi Luu, Kim-Ngan Thi Tran, Phuoc-Bao Pham   +5 more
doaj   +1 more source

Antimicrobial and Biofilm-Preventing Activity of l-Borneol Possessing 2(5H)-Furanone Derivative F131 against S. aureus—C. albicans Mixed Cultures

Pathogens, 2022
Candida albicans and Staphylococcus aureus are human pathogens that are able to form mixed biofilms on the surface of mucous membranes, implants and catheters.
Rand Sulaiman, Elena Trizna, Alena Kolesnikova, Alsu Khabibrakhmanova, Almira Kurbangalieva, Mikhail Bogachev, Airat Kayumov   +6 more
doaj   +1 more source

Hydration, Ion Distribution, and Ionic Network Formation in Sulfonated Poly(arylene ether sulfones) [PDF]

Macromolecules 54, 302-315 (2021), 2021
We use molecular dynamics simulations to probe hydration, ion spacing, and cation-anion interaction in two sulfonated polysulfones with different ion distributions along the polymer backbone. At room temperature, these polymers remain in a glassy state even with water contents more than 10%.
arxiv   +1 more source

A reagent to access methyl sulfones. [PDF]

Nat Commun
A chemical reagent to access methyl sulfones has been developed. Its reaction with various bis-nucleophiles leads to the rapid formation of previously unknown heteroaromatic methyl sulfones. Analogous strategy can also be used to construct alkyl-, CHF2-,
Poplavskyi Y, Ripenko V, Bova S, Biitseva A, Dmitriv YV, Tolmachev AA, Sadkova IV, Pishel I, Grygorov O, Phan VQH, Dias HVR, Mykhailiuk PK.   +11 more
europepmc   +2 more sources

A Study on the Chemistry and Biological Activity of 26-Sulfur Analogs of Diosgenin: Synthesis of 26-Thiodiosgenin S-Mono- and Dioxides, and Their Alkyl Derivatives

Molecules, 2022
A chemoselective procedure for MCPBA oxidation of 26-thiodiosgenin to corresponding sulfoxides and sulfone was elaborated. An unusual equilibration of sulfoxides in solution was observed.
Aneta M. Tomkiel, Dorota Czajkowska-Szczykowska, Ewa Olchowik-Grabarek, Lucie Rárová, Szymon Sękowski, Jacek W. Morzycki   +5 more
doaj   +1 more source

Copper-catalyzed sulfonylation of alkenes with CH₃SSO₃Na. [PDF]

BMC Chem
A successful methodology for the copper-catalyzed dehydrogenated methylsulfonylation of alkenes utilizing CH3SSO3Na in conjunction with hypervalent iodine reagents was successfully established. This method offers a practical avenue to obtain allyl methyl
Chen X, Wu G.
europepmc   +2 more sources

Samarium oxide as efficient and non-endangered metal for synthesis of sulfones from sulfides: an elemental sustainability concept

Journal of Taibah University for Science, 2023
Oxidation of sulfide to sulfone is a fundamental process to produce many important pharmaceutical compounds. Formerly, efficient methods have been reported for the synthesis of sulfones from sulfides.
Wei Lam Wan, Preeyashenny A. Jagathison, Noor Fazira Mohd Fauzi, Onn Jew Lee, Poh Wai Chia, Su-Yin Kan   +5 more
doaj   +1 more source

Synthesis of ω-Methylsulfinyl- and ω-Methylsulfonylalkyl Glucosinolates. [PDF]

Molecules
General pathways were devised to synthesize ω-methylsulfinyl- and ω-methylsulfonylalkyl glucosinolates, which represent an important class of structurally homogeneous plant specialized metabolites.
Mavratzotis M, Cassel S, De Nicola GR, Montaut S, Rollin P.   +4 more
europepmc   +2 more sources

Prospective Approach to the Anaerobic Bioconversion of Benzo- and Dibenzothiophene Sulfones to Sulfide

Molecules, 2019
Sulfur recovery from organic molecules such as toxic sulfones is an actual problem, and its solution through the use of environmentally friendly and nature-like processes looks attractive for research and application.
Olga Senko, Olga Maslova, Marina Gladchenko, Sergey Gaydamaka, Argam Akopyan, Sergey Lysenko, Eduard Karakhanov, Elena Efremenko   +7 more
doaj   +1 more source