Mechanical Activation of Platinum–Acetylide Complex for Olefin Hydrosilylation,ACS Macro Letters

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Mechanical Activation of Platinum–Acetylide Complex for Olefin Hydrosilylation
ACS Macro Letters ( IF 5.1 ) Pub Date : 2017-09-29 00:00:00 , DOI: 10.1021/acsmacrolett.7b00487
Kai Wei ₁ , Zongchun Gao ₁ , Huarong Liu ₁ , Xiaojun Wu ₂ , Feng Wang ₁ , Hangxun Xu ₁

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Harnessing mechanical forces to activate latent catalysts has emerged as a novel approach to control the catalytic reactions in organic syntheses and polymerization processes. However, using polymer mechanochemistry to activate platinum-based catalysts, a class of important organometallic catalysts in industry, has not been demonstrated so far. Here we show that the platinum–acetylide complex is mechanoresponsive and can be incorporated into a polymer backbone to form a new mechanophore. The mechanically induced chain scission was demonstrated to be able to release catalytically active platinum species which could catalyze the olefin hydrosilylation process. Various control experiments were conducted to confirm that the chain scission and catalytic reaction were originated from the ultrasound-induced dissociation of platinum–acetylide complex. This work further exemplifies the utilization of organometallic complexes in design and synthesis of latent catalysts for mechanocatalysis and development of self-healing materials based on silicone polymers.

中文翻译：

用于烯烃氢化硅烷化的铂-乙炔络合物的机械活化

利用机械力来激活潜在催化剂已成为一种控制有机合成和聚合过程中催化反应的新方法。然而，使用聚合物力学化学来活化铂基催化剂，这是一类重要的工业有机金属催化剂，目前尚未得到证实。在这里，我们表明铂-乙炔络合物具有机械响应性，可以结合到聚合物骨架中形成新的机械载体。机械诱导的断链被证明能够释放出催化烯烃氢化硅烷化过程的催化活性铂物质。进行了各种对照实验以证实断链和催化反应源于超声诱导的铂-乙炔络合物的解离。

更新日期：2017-09-29

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