title: Ultrasounds in melted poly(ethylene glycol) promote copper-catalyzed cyanation of aryl halides with K(4)[Fe(CN)(6)].
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.
authors.forename: Guido
authors.initials: G
authors.lastname: Giachi
authors.forename: Marco
authors.initials: M
authors.lastname: Frediani
authors.forename: Werner
authors.initials: W
authors.lastname: Oberhauser
authors.forename: Frederic
authors.initials: F
authors.lastname: Lamaty
authors.forename: Jean
authors.initials: J
authors.lastname: Martinez
authors.forename: Evelina
authors.initials: E
authors.lastname: Colacino
mesh_terms: D002384:Catalysis; D003300:Copper / Q000737:chemistry*; D005295:Ferrocyanides / Q000737:chemistry*; D006838:Hydrocarbons / Q000737:chemistry*; D009570:Nitriles / Q000737:chemistry*; D044367:Phase Transition; D011092:Polyethylene Glycols / Q000737:chemistry*; D013010:Sonication
chemical_list: D005295:Ferrocyanides; D006838:Hydrocarbons; D009570:Nitriles; D011092:Polyethylene Glycols; D003300:Copper; C031835:potassium ferrocyanide