42152-44-3Relevant articles and documents
Training a Constitutional Dynamic Network for Effector Recognition: Storage, Recall, and Erasing of Information
Holub, Jan,Vantomme, Ghislaine,Lehn, Jean-Marie
supporting information, p. 11783 - 11791 (2016/10/07)
Constitutional dynamic libraries (CDLs) of hydrazones, acylhydrazones, and imines undergo reorganization and adaptation in response to chemical effectors (herein metal cations) via component exchange and selection. Such CDLs can be subjected to training by exposition to given effectors and keep memory of the information stored by interaction with a specific metal ion. The long-term storage of the acquired information into the set of constituents of the system allows for fast recognition on subsequent contacts with the same effector(s). Dynamic networks of constituents were designed to adapt orthogonally to different metal cations by up- and down-regulation of specific constituents in the final distribution. The memory may be erased by component exchange between the constituents so as to regenerate the initial (statistical) distribution. The libraries described represent constitutional dynamic systems capable of acting as information storage molecular devices, in which the presence of components linked by reversible covalent bonds in slow exchange and bearing adequate coordination sites allows for the adaptation to different metal ions by constitutional variation. The system thus performs information storage, recall, and erase processes.
Copper(I)-catalyzed hydrophosphination of styrenes
Leyva-Pérez, Antonio,Vidal-Moya, Jose A.,Cabrero-Antonino, Jose R.,Al-Deyab, Salem S.,Al-Resayes, Saud I.,Corma, Avelino
, p. 362 - 367 (2011/02/17)
Hydrophosphination of styrenes has been accomplished with metal salts for the first time. (CuOTf)2·toluene complex is the catalyst of choice, but CuCl can also be used. "In-situ" EPR and NMR studies suggest Cu(I) as the catalytically active metal species, giving exclusively the anti-Markovnikov product. Phosphine oxides or β-ketophosphine oxides can be prepared in one-pot by oxidation with molecular oxygen.
Electrochemistry, Stability, and Alkene Complexation Chemistry of Copper(I) Triflate in Aqueous Solution. Potential for Use in Electrochemically Modulated Complexation-Based Separation Processes
Suzuki, Takayuki,Noble, Richard D.,Koval, Carl A.
, p. 136 - 140 (2008/10/09)
Copper(I) trifluoromethanesulfonate (CuOTf), which is insoluble in water, reacted with vinyl sulfonate anion (VS) to form a water soluble complex (concentrations > 0.1 M). Acidic CuOTf solutions prepared with relatively large VS/Cu(I) ratios were comparable in stability to solutions containing excess chloride ion. Reversible binding of alkenes (ethylene, 1,3-butadiene and 1-butene) to copper(I) in aqueous CuOTf/VS solutions was observed by 1H-NMR. The copper(I) displayed a competitive reaction with VS and the alkenes. This allowed the binding affinity of the alkenes to the copper(I) to be calculated based on the proton chemical shift for VS. The strength of alkene complexation followed the order ethylene > 1-butene ≈ 1,3-butadiene. The electrochemistry for the Cu(II/I) couple showed a quasi-reversible reaction that depended on acidity and the concentration of VS in the solution. Binding to copper(I) caused substantial amounts of the alkenes to be absorbed into CuOTf/VS solutions from the gas phase, especially at low [VS]/[Cu(I)] ratios. Calculations indicated that CuOTf in aqueous solution containing VS is superior to CuCl in chloride media for electrochemically modulated complexation-based separation of alkenes from alkanes.
