Results 41 to 50 of about 899 (191)

Merging Biocatalysis and Chemocatalysis in Flow: State‐of‐the‐Art and Future Directions for Sustainable Synthesis

Angewandte Chemie International Edition, EarlyView.
This review highlights recent advances in integrating biocatalysis and chemocatalysis in continuous flow to create streamlined, sustainable processes. It examines chemo‐enzymatic cascades combining at least one enzymatic and one chemical step, discusses challenges such as enzyme immobilization, leaching, and reactor clogging, and presents solutions ...
Petros Siasiaridis, Matteo Damian, Francesco G. Mutti   +2 more
wiley   +1 more source

Unusual Electronic Effects of Ancillary Ligands on the Perfluoroalkylation of Aryl Iodides and Bromides Mediated by Copper(I) Pentafluoroethyl Complexes of Substituted Bipyridines. [PDF]

, 2019
Several perfluoroalkylcopper compounds have been reported previously that serve as reagents or catalysts for the perfluoroalkylation of aryl halides. However, the relationships between the reactivity of such complexes and the electronic properties of the
Hartwig, John, Kalkman, Eric, Mormino, Michael   +2 more
core   +1 more source

Синтез 4-иод- и 4-иодозилбензолсульфокислоты [PDF]

, 2011
Предложены способы получения 4-иодбензолсульфокислоты и 4-иодозилбензолсульфокислоты как реагента, способного к рециклу. На примере окисления вторичных спиртов до кетонов и a-метоксилирования кетонов показаны препаративные возможности этого соединения ...
Галактионова, А. С., Дрыгунова, Л. А., Жолобова, Г. А., Зыкова, М. В., Корж, А. П., Ларькина, М. С., Мирошниченко, Юлия Юрьевна, Передерина, И. А., Смоляков, А. В., Тверякова, Е. Н., Функ, Андрей Андреевич, Юсубов, Мехман Сулейман-оглы (Сулейманович)   +11 more
core  

Application of statistical learning and mechanistic modelling towards mapping the substrate electronic space in a Cu-catalyzed Suzuki-Miyaura coupling [PDF]

Cu-catalyzed Suzuki–Miyaura coupling between highly fluorinated aryl boronate esters and aryl iodides has been studied with DFT calculations. The reaction mechanism proposed suggests that the oxidative addition of the aryl iodide onto the copper catalyst
Aullón López, Gabriel, Gómez-Mudarra, Francisco A., Jover Modrego, Jesús   +2 more
core   +1 more source

A study of diketopiperazines as electron-donor initiators in transition metal-free haloarene-arene coupling [PDF]

, 2017
Several diketopiperazines have been shown to promote carbon-carbon coupling between benzene and aryl halides in the presence of potassium tert-butoxide and without the assistance of a transition metal catalyst.
Cumine, Florimond, Murphy, John A., Tuttle, Tell, Zhou, Shengze   +3 more
core   +1 more source

2,4,5-Trichloro-1-iodobenzene

Acta Crystallographica Section E Structure Reports Online, 2003
The crystal structure of 2,4,5-tri­chloro­iodo­benzene, C6H2Cl3I, a precursor of polychlorinated bi­phenyls (PCBs), is described. The mol­ecule is disordered in two distinct ways. Despite its lack of inversion point symmetry, it straddles an inversion centre in space group P21/n.
Izabela Kania-Korwel, Hans-Joachim Lehmler, Larry W. Robertson, Sean Parkin   +3 more
openaire   +1 more source

Synthesis of Dithienylcycloalkene Molecular Switches Enabled by a Bench‐Stable Ti‐Complex

Chemistry – A European Journal, EarlyView.
Herein we report a set of cycloalkene‐bridged DTEs with ring sizes ranging from 4‐ to 7‐membered rings. The synthesis of these analogs was performed via a key McMurry coupling step, which was enabled by a practical, bench‐stable Ti(IV)‐complex. Remarkably, it is shown that the strained cyclobutene bridge outperforms other rings, even the most commonly ...
Marcell M. Bogner, Márton Hegedűs, Péter P. Kalapos, Attila Kunfi, Gábor London   +4 more
wiley   +1 more source

3,5-Bis(trifluoromethyl)iodobenzene [PDF]

, 2009
InChI = 1S/C8H3F6I/c9-7(10,11)4-1-5(8(12,13)14)3-6(15)2-4/h1-3H InChIKey = VDPIZIZDKPFXLI-UHFFFAOYSA-N (reagent used as a versatile allylation or arylation component) Physical Data: bp 59–61 °C (10 mmHg); fp 74 °C; d 1.919 g cm^(−3). Solubility: sol DMF, acetonitrile, toluene, and most organic solvents.
Chang, Shuh-Kuen, Oh, Young In
openaire   +2 more sources

1,1‐Disubstituted Vinylbromides: Versatile Building Blocks for the Synthesis of Nitrogen‐Containing Heterocycles

European Journal of Organic Chemistry, EarlyView.
1,1‐Disubstituted vinylbromides are key intermediates for constructing nitrogen‐containing heterocycles. This review provides an overview of the synthetic applications of 1,1‐disubstituted vinylbromides and summarizes recent developments in reaction methodologies, mechanistic insights, and the structural diversity of N‐heterocyclic compounds accessible
Anne Westermeyer, Jun Fang, Chonghuo Liu, Guillaume Lefèvre, Gérard Guillamot, Phannarath Phansavath, Virginie Ratovelomanana‐Vidal   +6 more
wiley   +1 more source

Dynamic Characterization of Crystalline Supramolecular Rotors Assembled through Halogen Bonding [PDF]

, 2015
A modular molecular kit for the preparation of crystalline molecular rotors was devised from a set of stators and rotators to gain simple access to a large number of structures with different dynamic performance and physical properties.
Catalano L., Garcia-Garibay M. A., Metrangolo P., Perez-Estrada S., Pilati T., Resnati G., Terraneo G.   +6 more
core   +1 more source