Ultrasounds in Melted Poly(ethylene glycol) Promote Copper-Catalyzed Cyanation of Aryl Halides with K4[Fe(CN)6]. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue ChemSusChem Année : 2014

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

Résumé

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.

Domaines

Chimie organique

Dates et versions

hal-00958869 , version 1 (13-03-2014)

Identifiants

Citer

Guido Giachi, Marco Frediani, Werner Oberhauser, Frédéric Lamaty, Jean Martinez, et al.. Ultrasounds in Melted Poly(ethylene glycol) Promote Copper-Catalyzed Cyanation of Aryl Halides with K4[Fe(CN)6].. ChemSusChem, 2014, 7, pp.919-924. ⟨10.1002/cssc.201300997⟩. ⟨hal-00958869⟩
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