Results 111 to 120 of about 60,682 (387)

Electrochemical oxidations of thioethers: Modulation of oxidation potential using a hydrogen bonding network

Electrochemistry Communications, 2019
A highly efficient chemo-selective electrochemical oxidation of thioethers to sulfoxides and sulfones was developed. The hydrogen bonding network generated from hexafluoro-2-propanol (HFIP) and acetic acid (AcOH) plays an important role in the modulation
Shiwen Liu, Bocheng Chen, Yi Yang, Yuhao Yang, Qianjin Chen, Xiaojun Zeng, Bo Xu   +6 more
doaj   +1 more source

Light Mediated Sulfonylation/C–H Activation/Annulation of Benzimidazoles Derivatives Catalyzed by Diarylmethylium Tetrafluoroborate Salts: An Experimental and Computational Study

Advanced Synthesis &Catalysis, EarlyView.
Through the exploiting of visible‐light, a key photoactive complex, and an acid‐catalyzed proton‐coupled electron transfer, polycyclic sulfonylated benzimidazoles are obtained through a domino process including sulfonylation, C–H activation, and annulation. Diarylmethylium tetrafluoroborates are employed as inexpensive organocatalyst capable of forming
Polyssena Renzi, Davide Cerrina, Emanuele Azzi, Giovanni Ghigo, Annamaria Deagostino   +4 more
wiley   +1 more source

Sulfones and the miracle at Carville

Revue d'histoire de la pharmacie, 1996
Parascandola John. Sulfones and the miracle at Carville. In: Revue d'histoire de la pharmacie, 84ᵉ année, n°312, 1996. Actes du XXXIe Congrès International d'Histoire de la Pharmacie (Paris, 25-29 septembre 1995) pp. 409-412.
openaire   +3 more sources

Sultones and Sultines via a Julia-Kocienski Reaction of Epoxides [PDF]

, 2016
We thank the EPSRC/Syngenta for a CASE Ph.D. Studentship (to G.M.T.S. under grant EP/J50029X/1), the EPSRC UK National Mass Spectrometry Facility at Swansea University and the EPSRC UK National Crystallography Service Facility at Southampton University ...
Amatore, Baumann, Blakemore, Blakemore, Bondarenko, Bondarenko, Bordwell, Bray, Bray, Carreira, Chudasama, Coles, Coulomb, Coulomb, Crooks, De Castro, Dittmer, Durst, Durst, Enders, Enders, Enders, Erdmann, Fischer, Fischer, Fraser-Reid, Fustero, Gianatassio, Haasnoot, Hantzsch, Jarvis, Julia, Kobayashi, Koch, Kocienski, Kyne, Laschewsky, Lindsley, Liskamp, Lovering, Mayr, Meek, Messinger, Messinger, Meyer, Minicone, Mondal, Morimoto, Movassaghi, Nwaukwa, Ojasoo, Postel, Sarrazin, Sasaki, Schaus, Schmitt, Smil, Smith, Snape, Starkenmann, Taylor, Wadsworth, Wolckenhauer, Wong, Xia, Xu, Yolka   +66 more
core   +1 more source

Fe‐Photocatalyzed Decarboxylative Giese‐Type Reaction of α‐N, O or S Carboxylic Acids: Insight into the Mechanism of the Radical Formation

Advanced Synthesis &Catalysis, EarlyView.
Electron‐deficient alkenes can be functionalized with α‐amino, α‐alkoxy and α‐alkylthio radicals formed by Fe‐photocatalyzed decarboxylation of the corresponding carboxylic acids. The reactions proceed under smooth ligandless conditions with inexpensive base and in the absence of oxidant. A mechanistic computational TD‐DFT study supports the occurrence
Fernando Pérez‐Maseda, María Martín, Jorge Labrador‐Santiago, Inés Corral, Diego J. Cárdenas   +4 more
wiley   +1 more source

Exploring PANI/CBTS Nanofiber Composites as Supercapacitor Electrodes: Structure–Performance Correlation

Advanced Sustainable Systems, EarlyView.
This study explores the synergistic integration of polyaniline (PANI) nanofibers with a CBTS‐based composite for supercapacitor applications. Structural and chemical analyses confirm strong interactions between the components, enhancing electrical conductivity and stability.
Süleyman Gökhan Çolak, Ahmet Güngör, Melis Özge Alaş Çolak, Utku Bulut Simsek, Rukan Genc, Emre Erdem   +5 more
wiley   +1 more source

Tosvinyl and besvinyl as protecting groups of imides, azinones, nucleosides, sultams, and lactams. Catalytic conjugate additions to tosylacetylene. [PDF]

, 2015
The use of the 2-(4-methylphenylsulfonyl)ethenyl (tosvinyl, Tsv) group for the protection of the NH group of a series of imides, azinones (including AZT), inosines, and cyclic sulfonamides has been examined.
Bosch Hereu, Lluís, Costa i Arnau, Anna M., Font, Joan, Mola Solà, Laura, Petit, Elena, Vilarrasa i Llorens, Jaume   +5 more
core   +2 more sources

Fabrication of Superinsulating Poly(Urethane‐Isocyanurate) Aerogels Derived from Upcycled Polycarbonate

Advanced Sustainable Systems, EarlyView.
Bisphenol‐A polycarbonate is upcycled via a simple one‐pot reaction into an aromatic Mannich polyol, which serves as a precursor for fabricating poly(urethane‐isocyanurate) (PUR‐PIR) aerogels. PUR‐PIR aerogels, prepared with different isocyanate indices, exhibit high porosities, high specific surface areas, ultralow thermal conductivity, and excellent ...
Ivona Glišić, Keita Saito, Chang‐lin Wang, Christos Pantazidis, Fabian Eisenreich, Željko Tomović   +5 more
wiley   +1 more source

Synthesis and Elastase Inhibitory Evaluation of Phosphate Esters and Mixed Phosphate Anhydride of Penam Sulfones

Molecules, 2000
The evaluation of human leucocite elastase inhibition by phosphate esters (1-2) and phosphate mixed anhydride (3) of penicillin sulfones and their precursor sulfides is described.
O. A. Mascaretti, María A. Laborde   +1 more
doaj   +1 more source

Possible contribution of olefins and heteroatoms to the Unidentified Infrared Bands

, 2003
The current assignments of the 11.3 feature are shown to be incompatible with observations. An unbiased survey of correlation charts suggests that the olefinic group R2=CH2 is a good alternative candidate. For the 12.7 feature, the best fits are provided
Allamandola, Bakes, Bregman, Bregman, Chiar, Chiar, Crété, Geballe, Guillois, Hudgins, Justtanont, Kwok, Langhoff, Molster, Papoular, Papoular, Papoular, Peeters, R. Papoular, Robertson, Sandford, Schlemmer, Sellgren, Sloan, Sylvester, Thaddeus, Tielens, Tielens, Tokunaga, Uchida, Vermeij, Verstraete   +31 more
core   +1 more source