Cobalt-Promoted B鈥揌 and C鈥揌 Activation: Facile B鈥揅 Coupling of Carboranedithiolate and Cyclopentadienyl
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- 作者：Rui Zhang ; Lin Zhu ; Guifeng Liu ; Huimin Dai ; Zhenzhong Lu ; Jianbo Zhao ; Hong Yan
- 刊名：The Journal of the American Chemical Society
- 出版年：2012
- 出版时间：June 27, 2012
- 年：2012
- 卷：134
- 期：25
- 页码：10341-10344
- 全文大小：291K
- 年卷期：v.134,no.25(June 27, 2012)
- ISSN：1520-5126
文摘
We report the one-pot reactions of the 16e鈥?/sup> half-sandwich complex CpCoS2C2B10H10 (1), methyl propiolate, and 3e鈥?/sup>-donor ligands, which lead to selective B-functionalization at carborane with cyclopentadienyl as a functional group at ambient temperature in good yields. Metal-promoted activations of both a B鈥揌 bond of the carborane and a C鈥揌 bond of the Cp unit take place sequentially in the cooperation of organic ligands. The reaction requires a 3e鈥?/sup>-donor ligand and an activated alkyne and is therefore suitable for a broad range of substrates. This investigation provides a simple and efficient synthetic route to B-functionalized carborane derivatives.