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水热合成MIL-101,过量浸渍法吸附Pd(OAc)_2,原位还原Pd~(2+)制得Pd/MIL-101催化剂.采用XRD、XPS、SEM、ICP、HRTEM和N_2吸/脱附实验对其结构进行表征,催化剂Pd纳米粒子尺寸在1.5~2.5 nm之间,含量为1.5%.催化实验表明,Pd/MIL-101能高效催化吲哚C_2位芳基化,对于活性较差的溴代芳烃,也能得到中等以上的收率,催化剂循环5次后仍能保持较高的反应活性,发展了吲哚C_2位衍生物的简单、高效的合成方法.
The Pd / MIL-101 catalyst was prepared by hydrothermal synthesis of MIL-101, Pd (OAc) _2 by over-impregnation method and Pd ~ (2+) reduction in situ. The XRD, XPS, SEM, ICP, HRTEM and N 2 adsorption / desorption The structure of Pd nanoparticles was characterized by means of experiments and the Pd nanoparticles were 1.5 ~ 2.5 nm in size with a content of 1.5%. The catalytic experiments showed that Pd / MIL-101 can efficiently catalyze the arylation of indole C 2, Of brominated aromatics, but also get more than moderate yield, the catalyst can still maintain a high reactivity 5 times after the cycle, the development of indole C_2 derivatives simple and efficient synthesis.