Synthese et reduction electrochimique de sels de p-nitrophenoxy alkyl ammonium en milieu non aqueux

✍ Scribed by B. Cheminat; B. Devaux; A.-M. Martre; P. Pouillen; G. Mousset

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 526 KB
• Volume: 30
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(85)87021-3

✦ Synopsis

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-Dam ee travail, nous avons r&IS la synthke de sels de @nitrophdnoxy alkyl) trimkthylammonium qui posskdent unc chaTne hydrocarbon&e plus ou mains longue suivant les mol&Aes Lcur comportement tlectrochimique est &tud% en milieu non aqueux (DMF). 11 met notamment en evidence la prkncc d'un troisibme pit de rtiuction P un potentiel t&s cathodique qui correspond a la rupture de la liaison carbone-oxygbne de l'hydroxylamine. Cette rtiuction est+rendue possible par un effet d'activation r6sultant d'un phtnomhc d'autosolvatation par les fonctions -N (CH,), du sub&at.

Abstrrct-Quaternary p-nitrophenoxy alkyl ammonium salts were synthesized and their electrochemical behaviour studied. The title compounds include in their molecule a hydrocarbon chain of various lengths. An activation effect provides the cleavage of the C-0 bond in the hydroxylamine molecule. Such a reduction step which commonly occurs at very cathodic potentials, beyond supporting electrolytes, is favourcd in our ease by a solvation phenomenon between the trimethylammonium group and the hydroxylamine.