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Published on: March 25, 2017
Efficient synthesis of carborane azo derivatives and their reactivity
Yang Gao1, Yue-Jian Lin1, Ying-Feng Han1
1Shanghai Key Laboratory of Molecular Catalysis and Innovative Material, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai, 200433, P. R. China. yfhan1980@fudan.edu.cn gxjin@fudan.edu.cn.
Abstract:
An iridium(iii)-catalyzed C-N-bond-forming direct synthesis of carborane azo derivatives was developed. The reaction of o-carborane monocarboxylate with aryldiazonium salt in the presence of a catalytic amount of [Cp*IrCl2]2 and NaOAc in CH3CN at 80 °C gave the corresponding carborane azo derivative in good yield. A series of cyclometalated iridium/rhodium complexes that contain Cp*M-B (M = Ir, Rh) bonds, and are stabilised by the intramolecular coordination of nitrogen donors, were successfully isolated and structurally characterised.
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