Gold-catalyzed Ullmann-type homocoupling of aryl halides is carried out with two different methodologies: (i) under micellar catalysis conditions in water; (ii) using a molten tetralkylammonium ionic liquid as the reaction medium. Glucose is used as a clean and renewable reductant. Morphology, size, and chemical composition of gold nanoparticles are ascertained by X-Ray Photoelectron Spectroscopy, Transmission Electron Microscopy and Dynamic Light Scattering analyses. A plausible reaction mechanism is proposed.
Ullmann Homocoupling Catalyzed by Free Gold nanoparticles in Water and Ionic Liquid
Monopoli A
Membro del Collaboration Group
;Cotugno P;Palazzo G;Ditaranto N;Mariano BMembro del Collaboration Group
;Cioffi N;Ciminale F;Nacci A
2012-01-01
Abstract
Gold-catalyzed Ullmann-type homocoupling of aryl halides is carried out with two different methodologies: (i) under micellar catalysis conditions in water; (ii) using a molten tetralkylammonium ionic liquid as the reaction medium. Glucose is used as a clean and renewable reductant. Morphology, size, and chemical composition of gold nanoparticles are ascertained by X-Ray Photoelectron Spectroscopy, Transmission Electron Microscopy and Dynamic Light Scattering analyses. A plausible reaction mechanism is proposed.File in questo prodotto:
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