Results 21 to 30 of about 4,382 (191)

Strong Tetrel Bonds: Theoretical Aspects and Experimental Evidence

Molecules, 2018
In recent years, noncovalent interactions involving group-14 elements of the periodic table acting as a Lewis acid center (or tetrel-bonding interactions) have attracted considerable attention due to their potential applications in supramolecular ...
Mehdi D. Esrafili, Parisasadat Mousavian   +1 more
doaj   +1 more source

Structural Reevaluation of the Electrophilic Hypervalent Iodine Reagent for Trifluoromethylthiolation Supported by the Crystalline Sponge Method for X-ray Analysis [PDF]

, 2013
Hypervalent iodine λ[superscript 3]-benziodoxoles are common electrophilic transfer reagents known for their enhanced stability compared to their non-cyclic analogues.
Alazet, Baert, Bootwicha, Brand, Brand, Brand, Brand, Deng, Deng, Ehrlich, Eisenberger, Fantasia, Fernández González, Frei, Geary, He, Inokuma, Inokuma, Katritzky, Kieltsch, Legault, Li, Liu, Müller, Niedermann, Niedermann, Ochiai, Ochiai, Panetta, Ritter, Shao, Tran, Vinogradova, Vinogradova, Vita, Wang, Zhdankin, Zhdankin, Zhdankin, Zhdankin, Zhdankin   +40 more
core   +1 more source

Harnessing Bifunctional N‐Benzoyloxyamides for Photoredox Amidative Dual Functionalizations of Alkenes

Angewandte Chemie, EarlyView.
A novel photocatalytic strategy is presented for intermolecular amidative dual functionalization of alkenes using N‐benzoyloxyamides as bifunctional N─O reagents. The method enables efficient olefin 1,2‐amidooxygenation and significantly extends its reactivity to encompass amidoazidation, diamination, and formal anti‐Markovnikov hydroamidation.
Harin Ryoo, Hyeyun Keum, Dongwook Kim, Sukbok Chang   +3 more
wiley   +2 more sources

Delocalized hypervalent silyl radical supported by amidinate and imino substituents [PDF]

, 2016
The reaction of the amidinato silylsilylene with a functionalized diaminochlorosilyl substituent [LSiSi(Cl){(NtBu)2C(H)Ph}] (1, L = PhC(NtBu)2) with ArN=C=NAr (Ar = 2,6-iPr2C6H3) in toluene afforded the delo-calized hypervalent silyl radical [LSi(-CNAr ...
Carter, Emma, Li, Yongxin, Lim, Kok Hwa, So, Cheuk-Wai, Xi, Hong-Wei, Zhang, Shu Hua   +5 more
core   +4 more sources

Synthesis of Bicyclo[1.1.1]Pentane Z‐Substituted Enamides, Enol Ethers, and Vinyl Sulfides Using Iodine (III) Reagents

Angewandte Chemie, EarlyView.
The sequential functionalization of novel BCP‐substituted ethynylbenziodoxolone (EBX) reagents into heteroatom‐ and BCP‐substituted alkenes is described. The addition of N, O, and S nucleophiles on the EBXs was stereoselective and generated heteroatomic Z‐vinylbenziodoxolone (VBX) reagents.
Najung Lee, Jonas Dechent, Elija Grinhagena, Jerome Waser   +3 more
wiley   +2 more sources

Structural Conformers of (1,3-Dithiol-2-ylidene)ethanethioamides: The Balance Between Thioamide Rotation and Preservation of Classical Sulfur-Sulfur Hypervalent Bonds [PDF]

, 2015
The reaction of N-(2-phthalimidoethyl)-N-alkylisopropylamines and S2Cl2 gave 4-N-(2-phthalimidoethyl)-N-alkylamino-5-chloro-1,2-dithiol-3-thiones that quantitatively cycloadded to dimethyl or diethyl acetylenedicarboxylate to give stable thioacid ...
Calvo Gredilla, Patricia, Cuevas Vicario, José Vicente, Fuertes Lázaro, Pedro, García Calvo, José, García Herbosa, Gabriel, García Valverde, María, Pascual, Ricardo, Rodríguez Rodríguez, Mª Teresa, Rojo Cámara, Mª Josefa, Torroba Pérez, Tomás   +9 more
core   +1 more source

An Atomically Dispersed Photocatalyst for Undirected para‐Selective C─H Bond Functionalizations

Angewandte Chemie, EarlyView.
This study presents an atomically dispersed recyclable heterogeneous photocatalytic method for para‐selective trifluoromethylation of electron‐deficient arenes without directing groups. Unlike previous substrate‐dependent approaches, this recyclable, atomically dispersed photocatalyst enables scalable synthesis of bioactive trifluoromethylated ...
Suman Pradhan, Jun Hu, Peng Ren, Yuman Qin, Noopur Jain, Susanna Monti, Giovanni Barcaro, Aleksander Jaworski, Xingchao Dai, Jabor Rabeah, Joaquin Silvestre‐Albero, Veronica Celorrio, Anna Rokicińska, Piotr Kuśtrowski, Sandra Van Aert, Sara Bals, Shoubhik Das   +16 more
wiley   +2 more sources

The heat of atomization of sulfur trioxide, SO$_3$ - a benchmark for computational thermochemistry [PDF]

, 1999
Calibration ab initio (direct coupled cluster) calculations including basis set extrapolation, relativistic effects, inner-shell correlation, and an anharmonic zero-point energy, predict the total atomization energy at 0 K of SO$_3$ to be 335.96 ...
Bauschlicher, Cioslowski, Jan M.L Martin, Martin, Martin, Martin, Purvis III, Raghavachari, Schütz, Watts   +9 more
core   +2 more sources

An Electrochemical Study of Key Catalytically Active Gold Complexes

Angewandte Chemie, EarlyView.
A systematic electrochemical investigation of Au(I) complexes sheds light on how ligand environments control gold oxidizability. Through cyclic voltammetry and density functional theory (DFT) analysis, key trends are established for phosphine, N‐heterocyclic carbene (NHC), and hemilabile P^N ligands, offering valuable insights into the design of ...
Emma Baubiat, Nguyen Huy Hoang Vo, Sandra Olivero, Véronique Michelet, Romain Melot   +4 more
wiley   +2 more sources

π‐Electron Donation at the Sulfoximidoyl Nitrogen Atom

Angewandte Chemie, EarlyView.
Density functional theory (DFT)‐based evidence for a strong positive mesomeric effect (+M‐effect) of the sulfoximidoyl group at N is presented. Our findings contrast with common characterizations of the sulfoximidoyl group as an exclusively electron‐withdrawing moiety.
Benjamin J. Statham, Florian F. Mulks, Carsten Bolm   +2 more
wiley   +2 more sources