Supported palladium‐gold alloy‐catalyzed cross‐coupling of aryl chlorides and hydrosilanes enabled the selective formation of aryl‐silicon bonds. Whereas a monometallic palladium catalyst predominantly promoted the hydrodechlorination of aryl chlorides and gold nanoparticles showed no catalytic activity, gold‐rich palladium‐gold alloy nanoparticles efficiently catalyzed the title reaction to give arylsilanes with high selectivity. A wide array of aryl chlorides and hydrosilanes participated in the heterogeneously‐catalyzed reaction to furnish the corresponding arylsilanes in 34–80% yields. A detailed mechanistic investigation revealed that palladium and gold atoms on the surface of alloy nanoparticles independently functioned as active sites for the formation of aryl nucleophiles and silyl electrophiles, respectively, which indicates that palladium and gold atoms on alloy nanoparticles work together to enable the selective formation of aryl‐silicon bonds.

中文翻译：

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合金纳米粒子上钯和金的双金属催化硅烷甲酰硅烷的硅烷化。

受支撑的钯金合金催化的芳基氯和氢硅烷的交叉偶联使得能够选择性地形成芳基-硅键。单金属钯催化剂主要促进芳基氯化物的加氢脱氯作用，而金纳米颗粒没有催化活性，而富金的钯金合金纳米颗粒则有效地催化了标题反应，从而提供了高选择性的芳基硅烷。各种各样的芳基氯和氢硅烷参与了非均相催化反应，以34–80％的收率提供了相应的芳基硅烷。详尽的机理研究表明，合金纳米粒子表面上的钯和金原子分别独立地充当形成芳基亲核试剂和甲硅烷基亲电试剂的活性位点，