Electrosynthesis and structural characterization of a novel aryl ether trimer

Besbes-Hentati, Salma; Said, Hechmi; Bouvet, Marcel

doi:10.1016/j.electacta.2007.01.023

Cited by 11 publications

(14 citation statements)

References 29 publications

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“…Previously, we have observed similar cross-over phenomenon in the voltammetric study of p-tert-butyl anisole, but without formation of coated electrode [16]. Besides, only uncompleted potentiostatic electrolysis (0.5 F mol −1 ), which led to 2,2 -dimethoxy-5,5 -di-tert-butylbiphenyl and 1-methoxy-bis-2,3-(2 -methoxy-5 -tertbutylphenyl)-4-tert-butylbenzene as main oxidation products, has been achieved.…”

Section: Introductionmentioning

confidence: 59%

“…The presence of such systems could be assigned to the oxidation of intermediate species, which are formed slowly from the product of the two overlapped steps, A 1 and A 2 . These intermediates are more difficult to oxidize than the monomer and its corresponding dimer (2) and trimer (3) [16]. The predominant species being formed during the electrochemical experiment will depend on the monomer concentration and the amount of added water.…”

Section: Effect Of Experimental Conditions On Voltammetric Patterns Omentioning

confidence: 99%

“…Our previous voltammetric study in dry acetonitrile solution [16] has shown that the anodic oxidation of p-tert-butyl anisole gives two overlapped waves, A 1 and A 2 , which are followed by one well defined and separated third step, A 3 . However, at highest concentration and lowest scan rates (25 and 50 mV s −1 ), the third wave breaks into two obviously separate anodic waves.…”

Section: Effect Of Experimental Conditions On Voltammetric Patterns Omentioning

confidence: 99%

“…4-tert-Butyl-methoxybenzene (1), 2,2 -dimethoxy-5,5 -di-tertbutyl biphenyl (2) and 1-methoxy-bis-2,3-(2 -methoxy-5 -tertbutylphenyl)-4-tert-butylbenzene (3) were prepared according to previously published paper [16]. New isomeric products of trimer (I a , I b and II) and tetramer (III and IV): a 0.1 M TBAP solution of 1 (0.278 g, 42.6 mM in dry acetonitrile) was electrolysed at a potential of 2.1 V versus SCE, under argon atmosphere in a divided cell.…”

Section: Productsmentioning

confidence: 99%

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Prediction of the electrochemical oligomerization of p-tert-butyl anisole by analyses of the electrolysed solution

Besbes-Hentati¹,

Said²

2010

Electrochimica Acta

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Section: Introductionmentioning

confidence: 59%

Section: Effect Of Experimental Conditions On Voltammetric Patterns Omentioning

confidence: 99%

Section: Effect Of Experimental Conditions On Voltammetric Patterns Omentioning

confidence: 99%

Section: Productsmentioning

confidence: 99%

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Prediction of the electrochemical oligomerization of p-tert-butyl anisole by analyses of the electrolysed solution

Besbes-Hentati¹,

Said²

2010

Electrochimica Acta

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“…These successive steps have approximately the same current magnitudes and positive shifting of the peak potentials; a cross over phenomenon was observed for the highest concentration. The occurrence of cross over has also been described for other compounds which can form polymers and/or deposits [36][37][38]. In contrast with the lower concentration, for which the first oxidation wave, A 1 , has some reversibility, at the higher concentration it occurs without the presence of a cathodic peak partner, and is observed over a short potential range.…”

Section: Hydrodynamic Investigation Of the Reduction Of [Cd(piph)(cl)mentioning

confidence: 87%

Investigation of the crystal structure and electrochemical properties of catena-poly[[chlorido(piperazin-1-ium–κN))cadmium(II)]-di-μ-chlorido]monohydrate

Mabrouk¹,

Dkhili²,

Besbes-Hentati³

et al. 2015

Res Chem Intermed

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A novel Cd(II) coordination polymer [Cd(C 4 H 11 N 2 )(l-Cl) 2 Cl] n ÁnH 2 O with a supramolecular structure has been synthesized by reaction of CdCl 2 2Á5H 2 O with piperazine. The compound was investigated by X-ray diffraction, electrochemistry, and IR spectroscopy. The CdCl 3 (C 4 H 11 N 2 )ÁH 2 O entity in the compound forms a 1D coordination polymer as a result of the bridging function of the chlorine atoms Cd-Cl 2 -Cd. Adjacent 1D coordination polymers are connected by (O,N,C)-H…Cl, (O,N)-H…Cl, and N-H…O hydrogen bonds, generating a three-dimensional supramolecular network. With this atomic arrangement, the complex can form an electroactive film on a platinum electrode by anodic oxidation in acetonitrile solution.

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Steric and Electronic Effects on the Configurational Stability of Residual Chiral Phosphorus‐Centered Three‐Bladed Propellers: Tris‐aryl Phosphane Oxides

Benincori

Bonometti

Cirilli

et al. 2012

Chemistry A European J

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A series of tris-aryl phosphane oxides existing as residual enantiomers or diastereoisomers with substituents on the aryl rings differing in size and electronic properties were synthesized and characterized. Their electronic properties were evaluated on the basis of their electrochemical oxidation and reduction potentials together with those of the corresponding "blade bromides" (i.e., the naphthalene derivatives displaying the same substitution pattern of the tris-naphthyl phosphane oxide blades, with a bromo substituent where the phosphorus atom is located) determined by CV. The residual stereoisomeric phosphane oxides were isolated in a stereochemically pure state and were found to be highly configurationally stable at room temperature (stereoisomerization barriers of about 27 kcal mol(-1)). The chiroptical properties of the residual stereoisomers and the assignments of absolute configuration are discussed. The configurational stability of residual tris-aryl phosphane oxides was found to be scarcely influenced by the electronic properties of the substituents present on the aromatic rings constituting the blades, while steric effects play the most relevant role. Detailed theoretical calculations are in agreement with the experimental results and also contribute to a rational interpretation of the stereodynamics of these systems.

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Electrosynthesis and structural characterization of a novel aryl ether trimer

Cited by 11 publications

References 29 publications

Prediction of the electrochemical oligomerization of p-tert-butyl anisole by analyses of the electrolysed solution

Prediction of the electrochemical oligomerization of p-tert-butyl anisole by analyses of the electrolysed solution

Investigation of the crystal structure and electrochemical properties of catena-poly[[chlorido(piperazin-1-ium–κN))cadmium(II)]-di-μ-chlorido]monohydrate

Steric and Electronic Effects on the Configurational Stability of Residual Chiral Phosphorus‐Centered Three‐Bladed Propellers: Tris‐aryl Phosphane Oxides

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