793-08-8Relevant academic research and scientific papers
Photoinduced Charge Accumulation and Prolonged Multielectron Storage for the Separation of Light and Dark Reaction
Schulz, Martin,Hagmeyer, Nina,Wehmeyer, Frerk,Lowe, Grace,Rosenkranz, Marco,Seidler, Bianca,Popov, Alexey,Streb, Carsten,Vos, Johannes G.,Dietzek, Benjamin
, p. 15722 - 15728 (2020/10/18)
The utilization of solar energy is restricted by the intermittent nature of solar influx. We present novel noble-metal free complexes that can be photochemically charged in the presence of sacrificial electron donors and remain stable in its charged form for over 14 h. This allows the doubly reduced Cu(I) 4H-imidazolate complex to be stored after photochemical charging and used as a reagent in dark reactions, such as the reduction of methyl viologen or oxygen. Combined UV-vis/EPR spectroelectrochemistry indicates that a two-electron reduction is induced by introducing sacrificial electron donors that facilitate proton-coupled electron transfer. Repeated photochemical reduction and chemical oxidation reveals that the complex retained a charging capacity of 72% after four cycles. We demonstrate a chemical system that can decouple photochemical processes from the day-night cycle, which has been a barrier to realizing utilization of solar energy in photochemical processes on a global scale.
Decarboxylative allylation of amino alkanoic acids and esters via dual catalysis
Lang, Simon B.,O'Nele, Kathryn M.,Tunge, Jon A.
supporting information, p. 13606 - 13609 (2015/02/02)
A combination of photoredox and palladium catalysis has been employed to facilitate the room temperature decarboxylative allylation of recalcitrant amino and phenylacetic allyl esters. This operationally simple process produces CO2as the only b
Kinetics of the decay reactions of the N,N-dimethyl-p-toluidine cation radical in acetonitrile. Acid-base interaction to promote the CH2-CH2 bonding
Goto, Masashi,Park, Hyun,Otsuka, Koji,Oyama, Munetaka
, p. 8103 - 8108 (2007/10/03)
The decay reaction of N,N-dimethyl-p-toluidine (DMT) cation radical (DMT?+) in acetonitrile (AN) was analyzed using an electron-transfer stopped-flow (ETSF) method. In the ETSF method, DMT?+ is generated by mixing AN solutions of DMT and tris(p-bromophenyl) amine cation radical (TBPA?+). When DMT?+ was generated quantitatively without DMT via 1:1 mixing of DMT and TBPA?+, it was found that DMT?+ was fairly stable in AN. On the other hand, when DMT remained with DMT?+ under the control of the mixing ratio of DMT/TBPA?+ (> 1), the neutral DMT was found to promote the decay reaction of DMT?+. From the determined rate law, -d[DMT?+]/dt = k [DMT?+] [DMT] (k = 6.5 × 102 M-1 s-1), the initial acid-base reaction between DMT?+ and DMT was clarified to be the rate determining step. The acid-base interaction was also confirmed by observing the decay reaction of DMT?+ in the presence of pyridine derivatives. The identical rate law, which indicates the rate-determining acid-base interaction, was obtained for eight pyridine derivatives examined, though the final product was different from the case of DMT. The ETSF method has permitted the straightforward analysis and given a definite kinetic conclusion concerning the acid-base reaction between DMT?+ and DMT.
Novel routes to 4-substituted N,N-dialkylanilines, N-alkylanilines and anilines
Katritzky, Alan R.,Lang, Hengyuan,Lan, Xiangfu
, p. 7445 - 7454 (2007/10/02)
4-(Benzotriazol-1-ylmethyl)-N,N-dialkylanilines, -N-alkylanilines, -anilines and some substituted analogs obtained via lithiation are converted by lithium aluminum hydride or Grignard reagents into 4-substituted N,N-dialkylanilines, N-alkylanilines and anilines, respectively, in good yields.
Photochemical Reactions of Bromoanthracenes with N,N-Dimethylaniline in Solution
Fulara, Jan,Latowski, Tadeusz
, p. 846 - 851 (2007/10/02)
Major products of the photolysis of 9-bromoanthracene and 9,10-dibromoanthracene in benzene and acetonitrile as well as photochemical reaction products of the two bromoanthracenes with N,N-dimethylaniline in these solvents have been isolated and identified.The mechanisms of partial reactions are discussed and attention is paid to the medium effect on the photochemical transformations. - Keywords: Photochemical Reactions, Bromoanthracenes
