A robust dimethylgold(III) complex stabilized by a 2-pyridyl-2-pyrrolide ligand |
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Authors: | Stéphanie Schouteeten |
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Institution: | Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States |
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Abstract: | Reaction of isopropyl(2-pyridyl)alkyl]amines such as N-isopropyl-N-2-methylpyridine or N-isopropyl-N-2-ethylpyridine with aqueous solutions of NaAuCl4 led to the formation of LAuCl2]AuCl4] in low yields, where L = pyridyl amine bound to gold in a bidentate fashion. Reaction of 2-(3,5-diphenyl-1H-pyrrol-2-yl)pyridine with aqueous NaAuCl4, however, proceeded with formal loss of HCl and direct formation of the gold(III) amido complex L′AuCl2, where L′ = deprotonated pyrrolyl ligand. Optimization of the reaction conditions to make the new amido complex identified MeCN:H2O (1:2) as the best choice of solvent, affording product in 92% yield. This dichloro amido complex is a convenient precursor to L′AuMe2, which was found to be air-stable and thermally robust. |
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Keywords: | Gold Cross-coupling |
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