Melted poly(ethylene glycols) (PEGs) were used for the first time as solvent for the sonochemically promoted cyanation of aryl halides employing inexpensive and safe K4[Fe(CN)6] and a relatively low amount of Cu-based catalyst. The Mw (weight-average polymer molecular weight) of PEG proved to notably influence the substrate conversion, which is indicative of a strong dependence of the sonication efficacy on solvent properties. Gel permeation chromatography (GPC), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) contributed to the characterization of the polymer and the elucidation of the catalytic system.

Ultrasounds in Melted Poly(ethylene glycol) Promote Copper-Catalyzed Cyanation of Aryl Halides with K4[Fe(CN)6] / Giachi, Guido; Frediani, Marco; Oberhauser, Werner; Lamaty, Frederic; Martinez, Jean; Colacino, Evelina. - In: CHEMSUSCHEM. - ISSN 1864-5631. - STAMPA. - 7:(2014), pp. 919-924. [10.1002/cssc.201300997]

Ultrasounds in Melted Poly(ethylene glycol) Promote Copper-Catalyzed Cyanation of Aryl Halides with K4[Fe(CN)6]

GIACHI, GUIDO;FREDIANI, MARCO;
2014

Abstract

Melted poly(ethylene glycols) (PEGs) were used for the first time as solvent for the sonochemically promoted cyanation of aryl halides employing inexpensive and safe K4[Fe(CN)6] and a relatively low amount of Cu-based catalyst. The Mw (weight-average polymer molecular weight) of PEG proved to notably influence the substrate conversion, which is indicative of a strong dependence of the sonication efficacy on solvent properties. Gel permeation chromatography (GPC), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) contributed to the characterization of the polymer and the elucidation of the catalytic system.
2014
7
919
924
Giachi, Guido; Frediani, Marco; Oberhauser, Werner; Lamaty, Frederic; Martinez, Jean; Colacino, Evelina
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1016983
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