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Synfacts 2011(12): 1376-1376
DOI: 10.1055/s-0031-1289416
DOI: 10.1055/s-0031-1289416
Polymer-Supported Synthesis
© Georg Thieme Verlag
Stuttgart ˙ New York
Ullmann Reaction of Aryl Iodides with Au@PMO
B. Karimi*, F. K. Esfahani
Institute for Advanced Studies in Basic Sciences, Zanjan, Iran
Weitere Informationen
Publikationsverlauf
Publikationsdatum:
18. November 2011 (online)
Significance
Gold nanoparticles supported on periodic mesoporous organosilica (Au@PMO) were prepared by treatment of NaAuCl4 with phenylene-containing periodic mesoporous organosilica (PMO), followed by the reduction with NaBH4 (eq. 1). Au@PMO catalyzed the Ullmann reaction of phenyl iodides to give the corresponding biphenyls in 80-95% yield (5 examples, eq. 2). In the reaction of iodobenzene, the catalyst was recovered and reused four times (4th reuse run: 80% yield).