613-31-0Relevant articles and documents
Scanning Electrochemical Microscopy. 33. Application to the Study of ECE/DISP Reactions
Demaille, Christophe,Unwin, Patrick R.,Bard, Allen J.
, p. 14137 - 14143 (1996)
The scanning electrochemical microscope (SECM) is used to measure the kinetics of ECE/DISP type reactions.The theory of the steady-state feedback response is developed in terms of numerical simulation.The theoretical curves show that the variation of the tip and substrate current with the tip-substrate separation can readily be used to differentiate between an ECE and a DISP1 pathway.The theoretical results suggest that rate constants up to 1.6E5 s-1 can be measured with tip sizes usually employed in SECM.The theory is validated using the experimental example of the reduction of anthracene in DMF in the presence of phenol.The reaction is shown to follow a DISP1 pathway, in agreement with previous studies.Good agreement is found between theory and experiment for all the phenol concentrations explored, and a rate constant of (4.4 +/- 0.4)E3 M-1 s-1 has been determined for the protonation of the anthracene radical anion by phenol.
Tetra-anion of 9,9'-Bianthryl
Huber, Walter,Muellen, Klaus
, p. 698 - 700 (1980)
9,9'-Bianthryl is reduced with lithium to yield a stable tetra-anion which can be characterised by n.m.r. spectroscopy and chemical evidence.
Dimerization of cycloproparenes by silver ion
Billups,McCord, Dianne J.,Maughon, Bob R.
, p. 4493 - 4496 (1994)
Cycloproparenes react with silver ion chloroform to yield dimers which can be aromatized by dichlorodicyanoquinone in benzene to give the corresponding acene.
Bank,Bockrath
, p. 6076,6082 (1972)
Fabre et al.
, p. 9,18 (1975)
Extremely Stable Anthraquinone Negolytes Synthesized from Common Precursors
Aziz, Michael J.,Fell, Eric M.,Gordon, Roy G.,Jin, Shijian,Jing, Yan,Tang, Zhijiang,Wong, Andrew A.,Wu, Min
, p. 1432 - 1442 (2020)
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Noble metal nanoparticles stabilized by hyper-cross-linked polystyrene as effective catalysts in hydrogenation of arenes
Bakhvalova, Elena S.,Bykov, Alexey V.,Demidenko, Galina N.,Kiwi-Minsker, Lioubov,Mikheev, Alexey V.,Nikoshvili, Linda Z.,Pinyukova, Arina O.,Sulman, Mikhail G.
, (2021/08/13)
This work is addressing the arenes’ hydrogenation—the processes of high importance for petrochemical, chemical and pharmaceutical industries. Noble metal (Pd, Pt, Ru) nanoparticles (NPs) stabilized in hyper-cross-linked polystyrene (HPS) were shown to be active and selective catalysts in hydrogenation of a wide range of arenes (monocyclic, condensed, substituted, etc.) in a batch mode. HPS effectively stabilized metal NPs during hydrogenation in different medium (water, organic solvents) and allowed multiple catalyst reuses.
Catalyzed transfer hydrogenation by 2-propanol for highly selective PAHs reduction
Philippov,Chibiryaev,Martyanov
, p. 15 - 22 (2020/07/15)
Catalytic hydrogenation of mono-, di- and trinuclear aromatic compounds has been studied under hydrogen transfer conditions at 150 °C and 82 °C in 2-PrOH as a hydrogen donor and with Raney nickel as a catalyst. In contrast to conjugated or condensed aromatic rings, isolated ones demonstrated low reactivity in transfer hydrogenation (TH) that can be used to increase the hydrogenation selectivity of the reaction. So, naphthalene and biphenyl are partially hydrogenated into tetralin and cyclohexylbenzene, respectively, with excellent conversion (≥ 96 %) and selectivity (≥ 98 %) for 5–6 h at 82 °C. Increasing the reaction temperature to 150 °C results expectedly in the hydrogenation of second aromatic ring, which occurs slowly enough. Only 8 % of decaline and 42 % of dicyclohexyl, correspondingly, were obtained after 5 h at 150 °C. At the same time, TH of trinuclear anthracene and phenanthrene at 150 °C resulted in the formation of deeper hydrogenated octahydro-anthracenes and -phenanthrenes, respectively.
A facile and versatile electro-reductive system for hydrodefunctionalization under ambient conditions
Huang, Binbin,Guo, Lin,Xia, Wujiong
supporting information, p. 2095 - 2103 (2021/03/26)
A general electrochemical system for reductive hydrodefunctionalization is described, employing the inexpensive and easily available triethylamine (Et3N) as a sacrificial reductant. This protocol is characterized by facile operation, sustainable conditions, and exceptionally wide substrate scope covering the cleavage of C-halogen, N-S, N-C, O-S, O-C, C-C and C-N bonds. Notably, the selectivity and capability of reduction can be conveniently switched by simple incorporation or removal of an alcohol as a co-solvent.