Synthesis, Characterization, and Catalytic Activity of Alcohol-Functionalized NHC Gold(I/III) Complexes

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• 作者：B茅atrice Jacques ; Damien Hueber ; Sophie Hameury ; Pierre Braunstein ; Patrick Pale ; Aur茅lien Blanc ; Pierre de Fr茅mont
• 刊名：Organometallics
• 出版年：2014
• 出版时间：May 12, 2014
• 年：2014
• 卷：33
• 期：9
• 页码：2326-2335
• 全文大小：422K
• 年卷期：v.33,no.9(May 12, 2014)
• ISSN：1520-6041

文摘

A series of alcohol-functionalized NHC gold(I/III) complexes of the types [(L)Au(Cl or NTf₂)] and [(L)AuCl₃] (L = IPrEtOH, (1, 4, 5), IMesEtOH (2, 6), IMeEtOH (3, 7)) was readily synthesized and characterized by NMR spectroscopy and single-crystal X-ray diffraction. The catalytic activity of the new complexes was assessed and compared with that of other gold catalysts, in the tandem 3,3-rearrangement鈥揘azarov reactions of enynyl acetate and the rearrangement reaction of alkynyloxirane. The new complexes appeared to be dual-site catalysts in both transformations, thanks to the presence of the primary alcohol function tethered to the NHC ligands.